Saturday 28 December 2013

MICROPROCESSORS AND MICROCONTROLLERS


MICROPROCESSORS AND MICROCONTROLLERS



1.      8085 microprocessor supports 74 instructions
2.      8085 is used to implement 3 Chip Computer
3.      The ALU inputs are supplied by Accumulator and Temporary Data Register
4.      The  Address and Data buffers are used to drive external address
5.      The 8086 has a 20-bit address bus
6.      The 8086 provides fourteen 16-bit Registers
7.      The execution unit of 8086 tells the BIU from where to fetch the inctructions
8.      The available memory is dived in to Chunks
9.      The control logic block accepts Control Bus Signals as well as Input from the address bus
10.  The DAC0830 is easy to interchange
11.  The ADC 7109 is a High Performance, Low Power Integrating
12.  In simple keyboard interface one input line is required to interface one key
13.  The 8279 provides 8 byte FIFO RAM to store key codes
14.  The Type-3 interrupt is used to implement Break Point function in the system
15.  8259 can manage 8 priority interrupts
 

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