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LONG PERIOD COMPUTER WATCH DOG TIMER   LONG PERIOD COMPUTER WATCH DOG TIMER View 315
This circuit uses a simple 4060 IC oscillator/timer that is reset periodically by a computer.
 
 
Computer Controlled 100ma Current Source   Computer Controlled 100ma Current Source View 140
Often in industrial control systems a constant current source is needed, which is controlled by a computer and referenced to circuit ground.
 
 
RS-232 to RS-485 Converters   RS-232 to RS-485 Converters View 122
RS-232 to RS-485 Interface Converters : The circuit we have chosen as our example is an RS232 to RS485 converter.
 
 
Time Domain Reflectometer(TDR)   Time Domain Reflectometer(TDR) View 171

 
 
7 segment rolling display using PC   7 segment rolling display using PC View 171
It is very interesting and convenient to be able to control everything while sitting at your PC terminal.
 
 
Simple Analog to Digital Converter   Simple Analog to Digital Converter View 135
Normally analogue-to-digital con-verter (ADC) needs interfacing through a microprocessor to convert analogue data into digital format.
 
 
PC based Frequency Meter   PC based Frequency Meter View 146
Here is a simple technique for measuring frequencies over quite a wide frequency range and with acceptable accuracy limits using a PC.
 
 


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