### Description

This circuit will output a string of characters ('tiny tapeout') to the 7-segment display.

The logic to light the characters appears in the bottom half of the simulation window.

The top half of the simulation window implements a modulo-11 counter. In other words, the counter increments up to 11 then resets. This counter is used to determine which character we should output to the 7-segment display.

The truth table for the design can be found in the [Design Spreadsheet](https://docs.google.com/spreadsheets/d/1-h9pBYtuxv6su2EC8qBc6nX_JqHXks6Gx5nmHFQh_30/edit?usp=sharing)

| SW      | Function        | 
|---------|-----------------|
| 1       | N/A             | 
| 2       | Reset           | 
| 3       | N/A             |
| 4       | Clock Disable   | 
| 5       | A               | 
| 6       | B               |
| 7       | C               | 
| 8       | D               | 


Design [inspired by Rakesh Peter's tt01 submission](https://github.com/r4d10n/tinytapeout-HELLo-3orLd-7seg)
A
!A
B
!B
C
!C
D
!D
A'BC + AB'C'D'
1
Loading
tt-block-input
A'BC
A'BC + A'CD + AB'C'D'
Loading
tt-block-output
A'B'C + B'CD' + A'CD' + AB'C'D
A'B'C + B'CD' + A'CD' + AB'C'D
AB' + B'C' + A'B(C + D) + A'CD'
A'B(C+D) + B'(C'D' + CD)'
A'C + D(A^B) + B'C'D'
SR
SR
SR
SR
SR
Check if counter == 10...if so send reset signal

ERC Warnings

flipflop9:CLK: Clock driven by combinatorial logic
flipflop8:CLK: Clock driven by combinatorial logic
flipflop7:CLK: Clock driven by combinatorial logic