Category Archives: Display Interfacing

Disadvantages of Software Approach

By admin | Published: June 12, 2009
In software approach to CPU has to look after digit selection in synchronosim with the data for specific digit. In other words, CPU has to give digit data on one port and then the digit selection bit pattern on the other port in synchronism. The process of refreshing has to be repeated all the time [...]
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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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Display Interfacing

By admin | Published: June 4, 2009
Most of the microprocessor controlled instruments and machines need to display letters of the alphabet and numbers to give directions or data values to users. This information can be displayed using CRT , LED or LCD displays. CRT displays are used when a large amount of data is to be displayed. In systems where only [...]
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