614 Four basic building blocks
614 : Four basic building blocks
- Author: Thomas novotny
- Description: The 1st input and the 1st output is connected to an inverter. The 2nd and 3rd input and the 2nd and 3rd output is connected to an AND-gate. The 3rd and 4th inputs and the 3rd and 4th output is connected to an OR-gate. The last 2 inputs and the 2nd-last output is connected to an Earle-latch, where the last input bit is the Enable-signal.
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- Clock: 0 Hz
How it works
The 1st input and the 1st output is connected to an inverter. The 2nd and 3rd input and the 2nd and 3rd output is connected to an AND-gate. The 3rd and 4th inputs and the 3rd and 4th output is connected to an OR-gate. The last 2 inputs and the 2nd-last output is connected to an Earle-latch, where the last input bit is the Enable-signal.
How to test
For the NOT-gate, AND-gate and OR-gate, test every input combination. For the Earle latch, test if the latch can hold onto a 0, and test if the latch can hold onto a 1.
External hardware
No addons.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | IN0 | OUT0 | |
| 1 | IN1 | OUT1 | |
| 2 | IN2 | OUT2 | |
| 3 | IN3 | ||
| 4 | IN4 | ||
| 5 | |||
| 6 | IN6 | OUT6 | |
| 7 | IN7 |