5x4 Key Matrix Keyboard Interfacing Module + FRC Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-13177
Indian Lab Suppliers supplies the 5x4 Key Matrix Keyboard Interfacing Module + FRC (Product ID: 13177) as part of its electronics engineering lab equipment range. It is a 20-key matrix keyboard interface card, arranged in four rows and five columns, for learning keyboard scanning on a microprocessor or microcontroller trainer.
Quick Answer
The 20 keys carry the codes 00 to 13 in hexadecimal and are wired as a 4 × 5 matrix, so only nine port lines are needed instead of twenty. The program drives the rows one at a time through an 8255 port, reads the columns to find the pressed key and adds debounce delays. The card connects with a 26-pin FRC cable and comes with a user manual and sample programs.
Key Specifications
| Parameter | Detail |
|---|---|
| Keys | 20, codes 00H-13H |
| Layout | 4 rows × 5 columns |
| Connection | 8255 port, 26-pin FRC |
| Documentation | User manual with sample programs |
Where This Is Used
Use it with trainers such as 8085 Microprocessor Trainer (Product ID: 13161). Combined keyboard and display cards are 4 Digit Seven Segment & 4x5 Keyboard Module (Product ID: 13188) and 16x1 LCD & 4x5 Matrix Keyboard Module + FRC (Product ID: 13189). Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
How many keys are there?
20, in four rows and five columns.
Why use a matrix?
It needs only nine port lines for 20 keys.
What key codes are used?
Hexadecimal 00 to 13.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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For pricing, bulk quantities or tender documentation on the 5x4 Key Matrix Keyboard Interfacing Module + FRC, reach our team via Contact Us or submit your requirement through our Tenders page.
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