There are a few ways to avoid this, but he wanted to relive his earlier EE college years and do it the direct way using a pair of 74HC00 quad NAND gate chips.

Hardware Security Modules (HSMs) are electronic devices using various hardware protection schemes against unauthorized reading of the secret data they hold. They usually perform actions like ...

Next to the CPU we find 32 KB of SRAM, 32 KB of flash and a clock oscillator. The fifth chip is a 74HC00 quad two-input NAND gate, which is used as a very tiny piece of glue logic to connect ...

A line drawing of the Internet Archive headquarters building façade. An illustration of a magnifying glass. An illustration of a magnifying glass.

When we press a pushbutton or toggle switch or a micro switch, two metal parts come into contact to short the supply. But they don’t connect instantly but the metal parts connect and disconnect ...

IC2 and IC3 divide this further with divide-by-2.5 stages to 40.96 kHz. IC5C from a 74HC00 quad dual input NAND gate inverts the Q D output of IC4A. This is fed to a NAND gate where it AND-ed with the ...

To start with, let’s go back to the 74HC00 data sheet from Texas Instruments (TI) that we looked at when I was discussing the evolution of CMOS logic (as usual, I encourage you to open any data sheets ...

The 74HC00 data sheet warns that inputs must not be allowed to float because this makes the output indeterminate. Now, that in itself is a good reason, but there is more… In my previous column, we ...

This concept has undergone testing with a 74HC00 quad NAND, a 74HC02 quad NOR, a CD4001 quad NOR, a CD4011 quad NAND, and a CD4013 dual-D-type flip-flop. For best accuracy, the timing capacitors for ...