In previous columns we’ve looked at TTL and CMOS logic devices in isolation. Things start to become interesting if we wish to use TTL and CMOS components in the same circuit. In previous columns we’ve ...

Pity the poor TTL computer aficionado. It’s an obsession, really — using discrete logic chips to scratch-build a computer that would probably compare unfavorably to an 80s era 8-bit machine in terms ...

The history and continued need of small-scale integration ICs for digital-logic functions. How a serial-input/parallel-output shift register can expand I/O pins while ...

Several sample device files for common logic devices are also included. The software allows the creation of test parameters for new devices, which can be saved to disk. Devices can be tested either ...

In some cases, newer releases of data sheets contain less information than their counterparts from yesteryear. Does this make anyone else wonder if we’re really making progress? In some cases, newer ...