How to Build an 8-Bit Computer: 18 Steps (with Pictures) What Is a Computer? This may seem like a very simplistic question that does not need answering An Introduction to Electronics. Before building an 8-bit computer, it is extremely useful to have a Binary Numbers. Today we are used to a worldwide numbering system that is based on the number Logic Gates. A computer consists of thousands of logic gates arranged to carry out certain See all full list on instructables 8-bit ALU, All Data Operations - PJRC 8-bit ALU, All Data Operations This ALU performs all 16 of the math operations that the microprocessor can execute betweeen the A and B registers. Please refer to the detailed description of the ALU circuity works. Most of the green symbols on this page are links to their associated schematic.