4 Digit Seven Segment & 4x5 Keyboard Module Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-13188
Indian Lab Suppliers supplies the 4 Digit Seven Segment & 4x5 Keyboard Module (Product ID: 13188) as part of its electronics engineering lab equipment range. It is a combined card with a 20-key matrix keyboard and a four-digit seven-segment display, for building complete keypad-and-display programs on a trainer.
Quick Answer
The 20 keys, coded 00 to 13 hexadecimal, are arranged in four rows and five columns, and the four-digit display is driven through serial-in, parallel-out shift registers using only two port pins. Students study keyboard scanning, software debouncing, key-closure detection, two-key lockout and key encoding, then show the result on the display. The card connects to an 8255 port through a 26-pin FRC cable and comes with a user manual and sample programs.
Key Specifications
| Parameter | Detail |
|---|---|
| Keyboard | 20 keys (00H-13H), 4 rows × 5 columns |
| Display | 4-digit seven-segment |
| Display drive | Serial-in, parallel-out shift registers, 2 port pins |
| Connection | 8255 port, 26-pin FRC |
| Documentation | User manual with sample programs |
Where This Is Used
It puts the functions of 5x4 Key Matrix Keyboard Interfacing Module + FRC (Product ID: 13177) and Four Digit Seven Segment Display + FRC (Product ID: 13175) on one card, and runs on trainers such as 8085 Microprocessor Trainer (Product ID: 13161). An LCD version is 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
What techniques does it teach?
Keyboard scanning, debouncing, key-closure detection, two-key lockout and encoding.
How is the display driven?
Through shift registers using two port pins.
How many keys are there?
20, in four rows and five columns.
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 4 Digit Seven Segment & 4x5 Keyboard Module, reach our team via Contact Us or submit your requirement through our Tenders page.
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