Tag Archives: microprocessor

Interfacing Multiplexed Display

By admin | Published: June 8, 2009
To solve the problems of the static display approach, multiplexed display method is used. Here 4 seven segment displays connected using multiplexed method. Here common anode seven segment LEDs are used. Anodes are connected to +5V through transistors. Cathodes of all seven segments are connected in parallel and then to the output of 7447 IC [...]
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Programmable Interrupt Controller 8258

By admin | Published: May 30, 2009
Interrupts can be used for a variety of applications. Each of these interrupt applications requires a separate interrupt input. If we are working with an 8085 microprocessor we get TRAP, RST7.5, 6.5, 5.5 and INTR interrupts inputs. For applications where we have multiple interrupt sources we have to use external device called a priority interrupt [...]
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