Introduction to Digital Computers 4: Computer Architecture

Okay, this took much longer than I wanted it to.

But finally the fourth video for our Introduction to Digital Computer series!

In this fourth video I start to tie the pieces together. We first finish the Arithmetic Logic Unit, then we tie it in with six registers: an accumulator, flag register, and four general purpose registers. Along the way we solve three problems: how do we create a three-state gate to drive our bus, how we handle the timing of read and write operations, and how we can build an accumulator that can read and write at the same time. We then show these circuits in action, using the control lines to sequence through a very simple operation.

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