How To Use A Redstone Comparator In Minecraft Pc effectively is crucial for any player looking to master redstone circuitry and create advanced mechanisms. At COMPARE.EDU.VN, we’ll break down the functionalities, crafting, and practical applications of redstone comparators. By understanding these redstone components, you can enhance your Minecraft experience.
1. What Is A Redstone Comparator in Minecraft PC?
A redstone comparator is a versatile component in Minecraft used to compare signal strengths, maintain signal strength, or subtract signal strengths. Essentially, it acts as a logic gate for redstone circuits.
1.1. Key Features of the Redstone Comparator
The redstone comparator is identified by these core features:
- Signal Comparison: Compares the signal strength of its back input to its side inputs.
- Signal Subtraction: Subtracts the signal strength of one input from another.
- Signal Maintenance: Passes a signal through unchanged.
- Inventory Detection: Detects the contents of containers.
1.2. Why Are Redstone Comparators Important?
Redstone comparators are essential because they allow for more complex and efficient redstone circuits. They enable functions such as item sorting, advanced logic gates, and measuring container contents.
2. What Platforms Support Redstone Comparators?
Redstone comparators are available across various Minecraft versions, ensuring consistent functionality across different platforms.
| Platform | Supported (Version*) |
|---|---|
| Java Edition (PC/Mac) | Yes (1.5) |
| Pocket Edition (PE) | Yes (0.14.0) |
| Xbox 360 | Yes (TU19) |
| Xbox One | Yes (CU7) |
| PS3 | Yes (1.12) |
| PS4 | Yes (1.12) |
| Wii U | Yes |
| Nintendo Switch | Yes |
| Windows 10 Edition | Yes (0.14.0) |
| Education Edition | Yes |
* The version that it was added or removed, if applicable.
3. Where Can You Find Redstone Comparators In Creative Mode?
In Creative Mode, finding a redstone comparator is straightforward.
3.1. Minecraft Java Edition (PC/Mac)
| Version(s) | Creative Menu Location |
|---|---|
| 1.8 – 1.19 | Redstone |
| 1.19.3 – 1.21.1 | Redstone Blocks |
3.2. Minecraft Pocket Edition (PE)
| Version(s) | Creative Menu Location |
|---|---|
| 0.14.1 – 1.1.3 | Tools |
| 1.2 – 1.21.0 | Items |
3.3. Minecraft Xbox Editions
| Platform | Version(s) | Creative Menu Location |
|---|---|---|
| Xbox 360 | TU35 – TU69 | Redstone and Transportation |
| Xbox One | CU23 – CU43 | Redstone and Transportation |
| Xbox One | 1.2.5 – 1.21.0 | Items |
3.4. Minecraft PS Editions
| Platform | Version(s) | Creative Menu Location |
|---|---|---|
| PS3 | 1.26 – 1.76 | Redstone and Transportation |
| PS4 | 1.26 – 1.91 | Redstone and Transportation |
| PS4 | 1.14.0 – 1.21.0 | Items |
3.5. Minecraft Nintendo
| Platform | Version(s) | Creative Menu Location |
|---|---|---|
| Wii U | Patch 3 – Patch 38 | Redstone and Transportation |
| Nintendo Switch | 1.04 – 1.11 | Redstone and Transportation |
| Nintendo Switch | 1.5.0 – 1.21.0 | Items |
3.6. Minecraft Windows 10 Edition
| Version(s) | Creative Menu Location |
|---|---|
| 0.14.1 – 1.1.3 | Tools |
| 1.2 – 1.21.0 | Items |
3.7. Minecraft Education Edition
| Version(s) | Creative Menu Location |
|---|---|
| 0.14.2 – 1.0.18 | Tools |
| 1.0.21 – 1.21.03 | Items |
4. What Materials Are Required To Make A Redstone Comparator?
Crafting a redstone comparator requires specific materials easily obtainable in Minecraft.
4.1. List of Required Materials
You need the following materials to craft a redstone comparator:
- 3 Redstone Torches
- 1 Nether Quartz
- 3 Stones
Alt Text: Crafting recipe for redstone comparator showing the placement of stone, redstone torches, and nether quartz.
5. How To Craft A Redstone Comparator In Survival Mode?
Crafting a redstone comparator in Survival Mode involves several steps.
5.1. Step-by-Step Crafting Guide
Follow these steps to create a redstone comparator:
- Open the Crafting Table: Access your crafting table to get the 3×3 crafting grid.
- Add Items: Place the materials in the correct pattern.
- Arrange Materials:
- First Row: One redstone torch in the center slot.
- Second Row: One redstone torch in the left and right slots, and one nether quartz in the center.
- Third Row: Three stones in all three slots.
- Move to Inventory: Transfer the crafted redstone comparator to your inventory.
5.2. Visual Aid for Crafting
Alt Text: The 3×3 crafting area in Minecraft, illustrating the correct placement of ingredients for a redstone comparator.
6. What Is The Item ID and Name for Redstone Comparator?
Understanding the item ID and name can be useful for commands and modifications.
6.1. Minecraft Java Edition (PC/Mac)
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.8 – 1.12 |
| Redstone Comparator | minecraft:comparator | 64 | 1.13 – 1.21.1 |
6.2. Minecraft Pocket Edition (PE)
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.0 – 1.21.0 |
6.3. Minecraft Xbox One
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.6.0 – 1.21.0 |
6.4. Minecraft PS4
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.14.0 – 1.21.0 |
6.5. Minecraft Nintendo Switch
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.6.0 – 1.21.0 |
6.6. Minecraft Windows 10 Edition
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.0 – 1.21.0 |
6.7. Minecraft Education Edition
| Item | Description (Minecraft ID Name) | Data Value | Stack Size | Version(s) |
|---|---|---|---|---|
| Redstone Comparator | minecraft:comparator | 0 | 64 | 1.0 – 1.21.03 |
7. What Are The Block States For Redstone Comparator?
Understanding block states allows for precise control and customization using commands.
7.1. Minecraft Java Edition (PC/Mac)
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| facing | north | Yes | No | [facing=north] | Item is facing North |
| facing | south | No | No | [facing=south] | Item is facing South |
| facing | east | No | No | [facing=east] | Item is facing East |
| facing | west | No | No | [facing=west] | Item is facing West |
| mode | compare | Yes | No | [mode=compare] | Item is in compare mode |
| mode | subtract | No | No | [mode=subtract] | Item is in subtract mode |
| powered | false | Yes | No | [powered=false] | Item is not powered |
| powered | true | No | No | [powered=true] | Item is currently powered |
7.2. Minecraft Pocket Edition (PE)
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| direction | 0 | Yes | No | [“direction”=0] | Item is facing North |
| direction | 1 | No | No | [“direction”=1] | Item is facing East |
| direction | 2 | No | No | [“direction”=2] | Item is facing South |
| direction | 3 | No | No | [“direction”=3] | Item is facing West |
| output_lit_bit | false | Yes | No | [“output_lit_bit”=false] | Item is not powered |
| output_lit_bit | true | No | No | [“output_lit_bit”=true] | Item is powered |
| output_subtract_bit | false | Yes | No | [“output_subtract_bit”=false] | Item is in compare mode |
| output_subtract_bit | true | No | No | [“output_subtract_bit”=true] | Item is in subtract mode |
7.3. Minecraft Xbox One
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| direction | 0 | Yes | No | [“direction”=0] | Item is facing North |
| direction | 1 | No | No | [“direction”=1] | Item is facing East |
| direction | 2 | No | No | [“direction”=2] | Item is facing South |
| direction | 3 | No | No | [“direction”=3] | Item is facing West |
| output_lit_bit | false | Yes | No | [“output_lit_bit”=false] | Item is not powered |
| output_lit_bit | true | No | No | [“output_lit_bit”=true] | Item is powered |
| output_subtract_bit | false | Yes | No | [“output_subtract_bit”=false] | Item is in compare mode |
| output_subtract_bit | true | No | No | [“output_subtract_bit”=true] | Item is in subtract mode |
7.4. Minecraft PS4
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| direction | 0 | Yes | No | [“direction”=0] | Item is facing North |
| direction | 1 | No | No | [“direction”=1] | Item is facing East |
| direction | 2 | No | No | [“direction”=2] | Item is facing South |
| direction | 3 | No | No | [“direction”=3] | Item is facing West |
| output_lit_bit | false | Yes | No | [“output_lit_bit”=false] | Item is not powered |
| output_lit_bit | true | No | No | [“output_lit_bit”=true] | Item is powered |
| output_subtract_bit | false | Yes | No | [“output_subtract_bit”=false] | Item is in compare mode |
| output_subtract_bit | true | No | No | [“output_subtract_bit”=true] | Item is in subtract mode |
7.5. Minecraft Nintendo Switch
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| direction | 0 | Yes | No | [“direction”=0] | Item is facing North |
| direction | 1 | No | No | [“direction”=1] | Item is facing East |
| direction | 2 | No | No | [“direction”=2] | Item is facing South |
| direction | 3 | No | No | [“direction”=3] | Item is facing West |
| output_lit_bit | false | Yes | No | [“output_lit_bit”=false] | Item is not powered |
| output_lit_bit | true | No | No | [“output_lit_bit”=true] | Item is powered |
| output_subtract_bit | false | Yes | No | [“output_subtract_bit”=false] | Item is in compare mode |
| output_subtract_bit | true | No | No | [“output_subtract_bit”=true] | Item is in subtract mode |
7.6. Minecraft Windows 10 Edition
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| direction | 0 | Yes | No | [“direction”=0] | Item is facing North |
| direction | 1 | No | No | [“direction”=1] | Item is facing East |
| direction | 2 | No | No | [“direction”=2] | Item is facing South |
| direction | 3 | No | No | [“direction”=3] | Item is facing West |
| output_lit_bit | false | Yes | No | [“output_lit_bit”=false] | Item is not powered |
| output_lit_bit | true | No | No | [“output_lit_bit”=true] | Item is powered |
| output_subtract_bit | false | Yes | No | [“output_subtract_bit”=false] | Item is in compare mode |
| output_subtract_bit | true | No | No | [“output_subtract_bit”=true] | Item is in subtract mode |
7.7. Minecraft Education Edition
| Block State | Value | Default | Required | Example | Description |
|---|---|---|---|---|---|
| direction | 0 | Yes | No | [“direction”=0] | Item is facing North |
| direction | 1 | No | No | [“direction”=1] | Item is facing East |
| direction | 2 | No | No | [“direction”=2] | Item is facing South |
| direction | 3 | No | No | [“direction”=3] | Item is facing West |
| output_lit_bit | false | Yes | No | [“output_lit_bit”=false] | Item is not powered |
| output_lit_bit | true | No | No | [“output_lit_bit”=true] | Item is powered |
| output_subtract_bit | false | Yes | No | [“output_subtract_bit”=false] | Item is in compare mode |
| output_subtract_bit | true | No | No | [“output_subtract_bit”=true] | Item is in subtract mode |
8. How To Use The Give Command For Redstone Comparator?
The /give command is useful for quickly obtaining redstone comparators in creative or survival modes with cheats enabled.
8.1. Minecraft Java Edition (PC/Mac)
- Versions 1.13 – 1.21.1:
/give @p comparator 1- Versions 1.8 – 1.12:
/give @p comparator 1 08.2. Minecraft Pocket Edition (PE)
- Versions 1.12.0 – 1.21.0:
/give @p comparator 1 08.3. Minecraft Xbox One
- Versions 1.12.0 – 1.21.0:
/give @p comparator 1 08.4. Minecraft PS4
- Versions 1.14.0 – 1.21.0:
/give @p comparator 1 08.5. Minecraft Nintendo Switch
- Versions 1.12.0 – 1.21.0:
/give @p comparator 1 08.6. Minecraft Windows 10 Edition
- Versions 1.12.0 – 1.21.0:
/give @p comparator 1 08.7. Minecraft Education Edition
- Versions 1.12.0 – 1.21.03:
/give @p comparator 1 09. What Are Some Practical Uses For Redstone Comparators?
Redstone comparators have various applications that can enhance your Minecraft experience.
9.1. Inventory Management
Redstone comparators can be used to detect the number of items in a container, such as a chest or hopper. This is useful for creating automatic sorting systems.
9.2. Advanced Logic Gates
Comparators can create complex logic gates like XOR, XNOR, and more, enabling more sophisticated redstone circuits.
9.3. Brewing Stands Automation
They can detect when a brewing stand has finished brewing a potion, automating the brewing process.
9.4. Item Dispensers
Comparators can ensure that items are dispensed only when a specific condition is met, such as a certain number of items being present.
9.5. Maintaining Signal Strength
Comparators can be used to maintain signal strength over long distances, preventing signal loss.
10. How Do Redstone Comparators Work?
Redstone comparators operate based on three primary modes: compare, subtract, and maintain.
10.1. Compare Mode
In compare mode, the comparator checks the signal strength of the input directly behind it against the signal strength of the side inputs. If the back input is stronger than either side input, the comparator outputs a signal.
10.1.1. Example Scenario
If the back input has a signal strength of 10, and one side input has a signal strength of 5, the comparator will output a signal strength of 10. If a side input has a signal strength of 11, the comparator will output no signal.
Alt Text: Visual representation of a redstone comparator in compare mode, showing signal inputs and outputs.
10.2. Subtract Mode
In subtract mode, the comparator subtracts the strongest side input signal from the back input signal. The resulting signal strength is then output.
10.2.1. Example Scenario
If the back input has a signal strength of 12, and the strongest side input has a signal strength of 4, the comparator will output a signal strength of 8 (12 – 4 = 8).
Alt Text: Diagram illustrating how a redstone comparator subtracts signal strengths in subtract mode.
10.3. Maintain Mode
When neither side input is active or the comparator is simply passing a signal from a container, it maintains the signal strength of the back input.
10.3.1. Example Scenario
If a chest with 15 items powers the back of the comparator, the comparator will output a signal strength corresponding to the fullness of the chest.
Alt Text: A redstone comparator maintaining signal strength from a container, demonstrating its signal maintenance functionality.
11. What Are Common Mistakes When Using Redstone Comparators?
Avoiding common pitfalls can save time and frustration when working with redstone comparators.
11.1. Incorrect Mode
Forgetting to set the comparator to the correct mode (compare or subtract) for the intended function. Always double-check the torch on the front of the comparator.
11.2. Signal Strength Issues
Not accounting for signal loss over distances or interference from nearby redstone components.
11.3. Input Priorities
Misunderstanding how the comparator prioritizes inputs, especially when multiple inputs are active.
11.4. Placement Errors
Incorrectly placing the comparator relative to the redstone circuit or container.
12. How To Troubleshoot Redstone Comparator Circuits?
When a redstone comparator circuit isn’t working as expected, follow these steps to troubleshoot.
12.1. Check the Mode
Ensure the comparator is in the correct mode (compare or subtract) based on the intended function.
12.2. Verify Signal Strengths
Use a redstone torch or repeater to check the signal strengths at various points in the circuit to identify any discrepancies.
12.3. Inspect Connections
Make sure all redstone dust, wires, and components are correctly connected and facing the right direction.
12.4. Test Inputs
Isolate each input to the comparator and test them individually to see if they are behaving as expected.
12.5. Simplify the Circuit
Reduce the complexity of the circuit to isolate the problem area and make debugging easier.
13. How to Use Redstone Comparators With Containers?
Redstone comparators are particularly useful for interacting with containers, such as chests, hoppers, and brewing stands.
13.1. Detecting Container Contents
When a comparator is placed with its back directly against a container, it outputs a redstone signal based on how full the container is. An empty container outputs a signal strength of 0, while a completely full container outputs a signal strength of 15.
13.2. Item Sorting Systems
Comparators can be used to create item sorting systems that automatically direct items to the correct storage locations based on container fullness.
Alt Text: Diagram of an item sorting system using redstone comparators to detect container fullness.
13.3. Brewing Stand Automation
A comparator placed next to a brewing stand can detect when the brewing process is complete, triggering a mechanism to remove the potions and start a new batch.
14. Advanced Techniques For Using Redstone Comparators
Mastering redstone comparators involves understanding and applying advanced techniques.
14.1. Locking Repeaters
Comparators can lock repeaters, preventing them from updating and maintaining a specific signal. This can be useful for creating stable circuits.
14.2. Analog Signals
Comparators can manipulate analog signals, allowing for more nuanced control over redstone circuits.
14.3. Memory Cells
Comparators can be used to create memory cells that store and recall specific states, enabling more complex automation.
14.4. Combining With Other Components
Experiment with combining comparators with other redstone components like observers, droppers, and hoppers to create even more advanced mechanisms.
15. How Can Redstone Comparators Enhance Your Minecraft Experience?
Redstone comparators enhance your Minecraft experience by enabling complex automation and control systems.
15.1. Automation
Automate repetitive tasks such as farming, mining, and crafting, freeing up time for more creative endeavors.
15.2. Control
Create sophisticated control systems for doors, lighting, and other in-game mechanisms.
15.3. Efficiency
Optimize resource management by automatically sorting and distributing items.
15.4. Creativity
Unleash your creativity by designing and building intricate redstone contraptions.
16. What Are Some Common Redstone Comparator Circuit Designs?
Explore some popular redstone comparator circuit designs to inspire your own creations.
16.1. Automatic Brewing System
This system automatically brews potions, refilling ingredients as needed.
Alt Text: Schematic of an automatic brewing system using redstone comparators to manage ingredients and brewing processes.
16.2. Item Sorter
This design sorts items into designated chests, keeping your storage organized.
Alt Text: Blueprint for an efficient item sorter circuit using redstone comparators.
16.3. Secure Vault
A vault that only opens when the correct item combination is placed in specific slots.
Alt Text: Design of a secure vault with a comparator-based locking mechanism.
17. What are the limitations of Redstone Comparators?
Despite their versatility, redstone comparators have limitations.
17.1. Signal Strength Range
Comparators can only work with signal strengths from 0 to 15. Signals outside this range require additional circuitry to manage.
17.2. Block Updates
Comparators are sensitive to block updates, which can sometimes cause unexpected behavior in complex circuits.
17.3. Complexity
Designing and debugging complex comparator-based circuits can be challenging and time-consuming.
17.4. Resource Intensive
Large comparator-based systems can be resource-intensive, requiring significant amounts of redstone and other materials.
18. What are the benefits of using Redstone Comparators?
The benefits of using redstone comparators far outweigh their limitations.
18.1. Precision
Comparators offer precise control over redstone signals, enabling complex automation.
18.2. Efficiency
They can significantly improve the efficiency of redstone circuits, reducing the need for bulky and complex designs.
18.3. Versatility
Comparators can be used in a wide range of applications, from simple item sorters to advanced logic gates.
18.4. Compact Designs
Comparator-based circuits are often more compact than those using other redstone components.
19. What Are Some Advanced Redstone Concepts Related To Comparators?
Delve into advanced redstone concepts to further enhance your comparator skills.
19.1. Quasi-Connectivity
Understand how quasi-connectivity affects comparator behavior, especially in tightly packed circuits.
19.2. Budding
Learn how block update detection (BUD) can be used to trigger specific actions based on comparator outputs.
19.3. Redstone Clocks
Use comparators to create stable and reliable redstone clocks for timing events in your circuits.
20. How Do Block Updates Affect Redstone Comparators?
Block updates can significantly impact redstone comparator behavior, requiring careful consideration.
20.1. Understanding Block Updates
A block update is any change to a block that triggers a redstone circuit to recalculate its state. This includes placing or breaking blocks, changing container contents, and more.
20.2. Comparator Sensitivity
Comparators are highly sensitive to block updates, and an unexpected update can cause a circuit to malfunction.
20.3. Mitigation Strategies
Use techniques such as observer blocks and careful circuit design to minimize the impact of block updates on comparator circuits.
21. What Are Some Common Redstone Comparator Acronyms and Terms?
Familiarize yourself with common redstone comparator acronyms and terms to better understand discussions and tutorials.
21.1. Acronyms
- RS: Redstone
- BUD: Block Update Detector
21.2. Terms
- Signal Strength: The power level of a redstone signal, ranging from 0 to 15.
- Logic Gate: A circuit that performs a specific logical function, such as AND, OR, or XOR.
- Tick: The fundamental unit of time in Minecraft, equal to 0.05 seconds.
22. How Can You Optimize Redstone Comparator Circuits for Performance?
Optimizing redstone comparator circuits can improve their performance and reliability.
22.1. Minimize Components
Reduce the number of redstone components in your circuit to decrease lag and improve performance.
22.2. Efficient Routing
Use direct and efficient routing for redstone signals to minimize signal loss and delays.
22.3. Avoid Loops
Avoid creating unnecessary loops in your circuit, as they can cause performance issues and unpredictable behavior.
22.4. Proper Spacing
Ensure proper spacing between redstone components to prevent interference and signal leakage.
23. What are some Redstone Comparator Projects for Inspiration?
Explore these projects for ideas on what you can achieve with redstone comparators.
23.1. Fully Automated Farms
Create farms that automatically harvest and replant crops using comparator-based control systems.
23.2. Advanced Security Systems
Design complex security systems that use comparators to detect intruders and trigger alarms.
23.3. Interactive Games
Build interactive games using redstone comparators to manage game logic and player input.
23.4. Automatic Storage Systems
Develop sophisticated storage systems that automatically sort and organize items.
24. How to Integrate Redstone Comparators with Command Blocks?
Integrating redstone comparators with command blocks allows for advanced control and customization.
24.1. Detecting Comparator Output
Use command blocks to detect the output of a redstone comparator and trigger specific actions based on the signal strength.
24.2. Custom Logic
Implement custom logic functions that are not possible with standard redstone components.
24.3. Game Mechanics
Create custom game mechanics and challenges using command blocks and comparator-based control systems.
25. Frequently Asked Questions (FAQ) About Redstone Comparators
25.1. What is the difference between compare and subtract mode?
In compare mode, the comparator outputs a signal only if the back input is stronger than the side inputs. In subtract mode, the comparator subtracts the strongest side input from the back input.
25.2. How do I change the mode of a redstone comparator?
Right-click on the redstone comparator to toggle between compare and subtract mode.
25.3. What does the signal strength from a container represent?
The signal strength from a container represents how full the container is, with 0 being empty and 15 being completely full.
25.4. Can comparators detect specific items in a container?
No, comparators cannot detect specific items. They only detect the overall fullness of the container.
25.5. How far can a comparator transmit a redstone signal?
A comparator can transmit a redstone signal up to 15 blocks away, just like redstone dust.
25.6. Why is my comparator not outputting a signal?
Check the signal strengths of the inputs, the comparator mode, and the connections to ensure everything is correctly configured.
25.7. Are comparators directional?
Yes, comparators are directional. They have a back input, side inputs, and an output.
25.8. Can comparators be used in multiplayer servers?
Yes, comparators function the same in multiplayer servers as they do in single-player mode.
25.9. How do I use a comparator with a hopper?
Place the comparator with its back against the hopper to detect how full the hopper is.
25.10. Are comparators affected by chunk loading?
Yes, comparators can be affected by chunk loading. Ensure that all parts of your circuit are in loaded chunks for consistent operation.
Conclusion
Mastering how to use a redstone comparator in Minecraft PC is essential for creating efficient and complex redstone contraptions. Whether you’re automating tasks, designing intricate logic gates, or enhancing your storage systems, comparators provide the precision and versatility you need. For more detailed comparisons and insights on redstone components and other Minecraft features, visit compare.edu.vn.
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