These books provide the home-brew tinkerer with a, um, grounding in the basics of micro circuits—with which you can build your own calculators, amplifiers, meters and terminals, and get a start on building your own computer. Each book deals with a different type of component. CMOS circuits are building-block electronic switch circuits out of which computer choice pathways are woven. TTL circuits are simpler, more often used to build clocks, meters, and peripherals. Getting through TTL is a good step towards learning CMOS. Active filters are useful in amplifying or controlling sound frequencies. Lancaster takes pride in teaching you to make things that are more useful and versatile—more artistic, really—than what you can buy commercially. You’ll need some electronics experience, or lots of time, or both.
