Position: Index > Basic Circuit >

4 - Channel Digital Logic Analyzer electronic circuit diagra

2015-01-14 04:38  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.
4 - Channel Digital Logic Analyzer electronic circuit diagram

This is one of the simplest circuit for a PC parallel port based DLA. The Circuit is mainly used to protect the port which is fabricated on the motherboard itself.
The IC 74LS04 is an inverter and acts as a buffer. The Zener is used for undervoltage and overvoltage protection. If a voltage >5V appears on the input, The buffer will not transmit this voltage to the PC. In the case of a voltage< 0V, The Zener will break down and 0.7V will appear at the input, hence again protecting the PC.
The software consists of two parts a graphical interface which shows five digital waveforms,.Various features of the waveforms can be controlled by the software. There is also a text interface in which the circuit is used as a 4-Channel DLA. The software is in pascal , an executable version is also avaliable.

Source: Electronics Lab




Reprinted Url Of This Article:
http://www.free-circuits.com/circuits/tools-and-measuring/324/4-channel-digital-logic-analyzer