136 OCDCpro TT key lock test design IHP
136 : OCDCpro TT key lock test design IHP
- Author: Johanna T. Wallenborn
- Description: key lock test chip ocdcpro
- GitHub repository
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How it works
4-Input Digital Key Lock Circuit: This project implements a simple digital key lock using a combinational logic circuit with 4 input pins and 1 output pin. Only a specific combination of these inputs will unlock the circuit (output = 1). Any other combination keeps the output locked (output = 0).
How to test
The correct input number is 1001. Only this specific combination the output is set to high.
External hardware
Input: switches, output: LED
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Pin B1 | Pin A1 | |
| 1 | Pin B2 | ||
| 2 | Pin B3 | ||
| 3 | Pin B4 | ||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 |