8085 Microprocessor

                                            PA0- PA7: port a, it is 8 bit bi-directional i/o pins. PB0-PB7: port b, It is 8 bit bi-di...

                             It has been divided in two section: Group A and Group B. Each of 12 bits. Group A: PA0-PA7 & PC4-PC7(p...

8255 is a programmable peripheral interface. It contains three i/o port that can be programmed in different mode. It is a gene...

The 8155 timer consists of two 8-bit registers. 1. 8-bit LSB and 8-bit MSB. 2. In these 16 bits, 14 bits are used for counter ...