microprocessor 8085
MICROPROCESSOR - 8085 ARCh 8085 is pronounced as "eighty-eighty-five" microprocessor. It is an 8-bit microprocessor designed by Intel in 1977 using NMOS technology. It has the following configuration − 8-bit data bus 16-bit address bus, which can address upto 64KB A 16-bit program counter A 16-bit stack pointer Six 8-bit registers arranged in pairs: BC, DE, HL Requires +5V supply to operate at 3.2 MHZ single phase clock It is used in washing machines, microwave ovens, mobile phones, etc. 8085 Microprocessor – Functional Units 8085 consists of the following functional units − Accumulator It is an 8-bit register used to perform arithmetic, logical, I/O & LOAD/STORE operations. It is connected to internal data bus & ALU. Arithmetic and logic unit As the name suggests, it performs arithmetic and logical operations like Addition, Subtraction, AND, OR, etc. on 8-bit data. General purpose register There are 6 general purpose registers in 8085 pro