THE LOGIC INTEGRATED CIRCUITS DIARIES

The 7400 chip, containing four NANDs. The two further pins source electrical power (+five V) and connect the ground. For smaller-scale logic, designers now use prefabricated logic gates from people of gadgets like the TTL 7400 sequence by Texas Devices, the CMOS 4000 series by RCA, and their Newer descendants. More and more, these mounted-functiona