Hackaday

Building A Combination Lock With Logic Chips

The component gods must have smiled on [Darrell], because he recently ran into a cabinet full of 7400-series logic chips for sale at his local college surplus. All the regulars were there – flip-flops ...
Hackaday

Combo Lock Uses Relays And Logic Gates

Here’s a really fascinating circuit that implements a combination lock using relays and logic gates. Even with the schematic and written explanation of how it works we’re still left somewhat in the ...
EDN

Less is More When You Design With Configurable and Combination Logic

If you’d like to squeeze more functionality into less space, while simplifying inventory and reducing system cost, then check out NXP’s configurable and combination logic. These flexible and ...
EDN

Dual PCB Configurable Logic for More Ways to Save Space and Lower Cost

Today, engineers are always looking to squeeze more functionality into less space, while simplifying inventory and reducing system cost. Dual PCB configurable logic from NXP combines two configurable ...
Electronic Design

Six MOSFETs, Four Pins Create Two-Input Combo NAND/NOR Gate

This CMOS two-input combination NAND/NOR gate is a three-input, fourpin logic gate. A p-channel enhancementtype MOSFET (Q1) and an n-channel enhancement-type MOSFET (Q4) form one complementary ...
Design-Reuse

DDR23 COMBO PHY CMD/ADDR BLOCK ; UMC 40LP/RVT LowK Logic Process with 2.5V device

DDR23 COMBO PHY CMD/ADDR BLOCK ; UMC 40LP/RVT LowK Logic Process with 2.5V device ...