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Why memory decoding is required?
To attach a memory device to the microprocessor, this is necessary to decode the address sent by the microprocessor. Decoding creates the memory function at a unique section or partition of that memory map. Without this address decoder, only one memory device can be attached to a microprocessor that would make this virtually useless.
What are the basic modes of operation of 8255? There are two basic modes of operation of 8255, viz. 1. I/O mode. 3. BSR mode. In I/O mode, the 8255 ports work as progr
Zero Flag - Registers If the result of any arithmetical or logical operation in the accumulator is zero i ,e all the bits of accumulator ( with some exceptions ) are
how can I use switching diodes to achieve SPDT "relay" function? 2 inputs 12vdc..for BI-Color LED.
A burglar alarm system is controlled by a microprocessor system. The system has three independent circuit each consisting of 7 passive infra red sensors. The controller can be prog
Energy stored in a capacitor During charging process by capacitor, it will get energy. Energy is stored in static form. The voltage in capacitor will enhance from 0 volt to E v
discussion for experiment
When both MT 2 and Gate are positive In this junction P 1 N 1 and P 2 N 2 are forward biased whereas junction N 1 P 2 is reverse biased. The gate current flows thr
Q. Illustrate working of Direct-coupled Amplifiers? Direct-coupled Amplifiers : The following figure shows a direct-coupled amplifier consisting of two stages. A dc voltage i
Demand Meters Demand meters measure volt-amperes (in kVA), that merge both reactive (reflected) and actual (consumed) power. In its easiest form, a demand meter has a gauge wh
Q. How to convert Decimal to Binary number? To convert the decimal to binary is slightly more difficult. There are two procedures (Methods) that may be used to convert from dec
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