52 Neptune guitar tuner (proportional window)

52 : 0b 000 110 100 : Neptune guitar tuner (proportional window)

Select Project 1 2 3 4 5 6 7 8 9 ON SW2

picture

How it works

Uses a set of registers to divide the clock, and then some combinational logic to convert from binary to decimal for the display.

Puts a slower square wave output on output 7.

How to test

After reset, the counter should increase by one every second.

IO

# Input Output
0 clock segment a
1 reset segment b
2 clock config A segment c
3 clock config B segment d
4 measured frequency input pulses segment e
5 none segment f
6 none segment g
7 none display select