40 Tiny tapeout test gates
40 : Tiny tapeout test gates
- Author: Aaron Hui
- Description: Prints out the letter A
- GitHub repository
- Open in 3D viewer
- View in Wokwi
- Clock: 10000 Hz
How it works
This design implements basic digital logic gates — NOT, NOR, and NAND — to produce an output pattern forming the ASCII representation of the letter A. When an input signal is applied to ui[0], the logic chain processes the signal through the configured NOT, NOR, and NAND gates. The resulting high/low output levels on uo[0] and uo[1] correspond to the predefined bit pattern that, when observed on a connected LED array or logic analyzer, visually represents the letter A.
How to test
Connect the Tiny Tapeout board to power and clock (10 kHz). Apply a logic high (1) or low (0) to the input pin ui[0]. Observe the output signals on uo[0] (NOR) and uo[1] (NAND). If connected to an LED matrix or viewer, the pattern displayed should correspond to the letter A. Optionally, use a logic analyzer to verify the expected high/low logic states on each output.
External hardware
None needed
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | input not | output nor | |
| 1 | output nand | ||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 |