Selectable Write Line 3-Character HEX Display.
Switch Explanation and Info:
1st Column:
- Switch 1 (LSB) to Switch 4 (MSB) = BCD input for selected line (write mode only)
2nd Column:
- Switch 1 (LSB) and 2 (MSB) = Line select (write mode only) (4th line select mode reserved for future use)
3rd Column:
- Switch 1 = Write mode (1) / Read mode (0)
- Switch 2 = Clock - on positive edge (writes input to memory in write mode)
Note: Displays on top will show contents of all memory only when in read mode.
Display on bottom helps preview the input before writing to a memory line in write mode.
