Teaching kids about computers...

[der Mouse]

> PISC  Pitiful instruction set computer.

:-)

> A varient of TOY idea.  There are others inlcusing a 4bitter.

This is totally doable.  I once took a computer hardware design course
where our term project was to design and build a small 4-bit computer -
CPU (we were allowed an ALU chip), RAM (we used a "register file" -
just RAM with 4 bits each of address and data), and very rudimentary
I/O (switches and lights).

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