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Architecture of 8085 Microprocessor
The 8085 microprocessor is an 8 bit general purpose microprocessor. 8 bit processor means it can read write and process 8 bit data at a time. The 8085 microprocessor chip has 40 pins requires +5 V power supply and can operate with a 3MHz clock frequency.
Although the internal architecture of 8085 microprocessor is very complicated the programme is concern only with a small part of it which can be referred in the program or which is important to know to the write a program. The block diagram showing this part is called the programming model of the microprocessor. To understand the basic and important functions of 8085 microprocessor we will concentrate only on the programming model here. The detail architecture of 8085 microprocessor will be discussed later.
Example of Registers Example : Write the instruction to copy data byte 24H stored in register C to register B Solution : The instruction to copy data byte is a
What are operations performed on data in 8085 The various operations performed are Store 8-bit data Perform arithmetic and logical operations Test for conditio
SUB Subtract Instruction This instruction is used to subtract the contents of any register or memory location from the contents of accumulator. There are two formats as
Q. A 7.5-hp, 250-V, 1800-r/min shuntmotor, having a full-load line current of 26 A, is started with a four-point starter. The resistance of the armature circuit, including the inte
What do you mean by internal data bus? Internal Data Bus: A bus which operates only in the internal circuitry of the CPU, communicating between the internal caches of memory
Personal safety Power supplies can be very dangerous. This is specifically true of high voltage circuits, but anything over 12 V must be treated as lethal potentially. A po
Q. Explain the ideal drain characteristics of the JFET? The JFET consists of a thin layer of n-type material with two ohmic contacts, the source S and the drain D ,along with t
Q. Illustrate BCD-to-decimal decoding with a 4-to- 16 decoder, and draw the corresponding truth table.
Explain the different instruction formats with examples The instruction set is grouped into the following formats One byte instruction MOV C,A Two byte instruction
Normal 0 false false false EN-IN X-NONE X-NONE POWER SUPPLIERS
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