BCD Thumbwheel Switch is used to input-set data in digital form, this can be read by digital circuits, uC and uP systems and PLC-SCADA Interfaces. Temperature Measurement and Control In the early transition of...
Printer Port Circuit to see the inputs logic state and drive a few outputs. The preset control program helps test out the circuit operation. Use safe 5V Levels. Simple Printer Port Interface, Input-Output –...
Some outputs are via Dual Differential Line Driver type DS8830. This device will interface with standard TTL systems. The differential outputs are balanced and are designed to drive long lengths of coaxial cable, strip...
This circuit is a small representation of a very low cost printer sharer. It has no Active Devices only diodes.
I had to once interface an high voltage circuit to PC, The uC had to communicate thru RS232–Comm port–Serial Port. Part of the 80C31 8051 SBC Even though i had isolation at the sensors...
This is the Analog front end of the 80C39 Process Controller. The analog input is protected by a Zener barrier, low leakage. You could use clamping diodes too. The non-inverting low-offset amp offers high input impedance....
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