Add minimal tools to use it for educational purposes

[MarcoLardelli]

This looks VERY (!) interesting for education. Only very few things would need to be added to make it extremely useful for this purpose:

1. LEDs showing the status of registers, data bus and address bus and the important control signals
2. A slow clock mode (1 Hz)
3. An option to clock the computer manually using a push button
4. Maybe an option for input and output (again with LEDs)
5. Pin heads for all important signals (to watch signals with DSO).

Thank you for this great project!

[defdefred]

Clearly a masterclass for computer science school!
Isn't the purpose of the emulator?