167 *NOT WORKING* HP 5082-7500 Decoder
167 : *NOT WORKING* HP 5082-7500 Decoder
- Author: Per Jensen
- Description: Trying to recreate the decoding logic in the HP 5082-7500-display. At this moment project is not finished.
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 0 Hz
How it works
This design should be able to recreate the old HP 5082-7500 display logic. This is a custom HP ASIC from the 70s, made on new silicon.
How to test
Connect inputs to 4-bit BCD input and LEDs to output x---y
External hardware
- BCD switch or counter
- LED dot-matrix-display.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | |||
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 |