!" !
#$%"
Transistor (fig. 3-1) – Truth table for NAND, NOR and NOT.
The relation to the Boolean algebra lays in the different types of gates, and the work with the values 0 and 1. These gates sent out a voltage of 0-1 for the value of 0, and between 3,3-5v for the value of 1. They can be used for creating bigger digital circuits.
fig 3-2 (page 137 in the book) The most known digital circuits today is listed down under: • • • • • • •
Multiplexers (more input less output) Demultiplexers (less input more output) Encoders and decoders Comparators (compares to inputs) Arithmetic (Shifter and adders) Latches (SRLatch) Flip-flops (memory)