Why 8085 is called 8-bit microprocessor explain?
The Intel 8085 is an 8-bit microprocessor. Its data bus is 8-bit wide and hence, 8 bits of data can be transmitted in parallel from or to the microprocessor. The Intel 8085 requires a 16-bits. The 8 most significant bits of the address are transmitted by the address bus, (Pins A8, to A15).
What are the basic features of 8085 microprocessor?
Microprocessor – 8085 Architecture
- 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.
What is 8-bit number in microprocessor?
In computer architecture, 8-bit integers, memory addresses, or other data units are those that are 8 bits (1 octet or 1 Byte) wide. Also, 8-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size.
Is an 8-bit main register in 8085 microprocessor?
The 8085 has six general – purpose registers to store 8-bit data; these are identified as B, C, D, E, H and L as shown in the figure. They can be combined as register pairs – BC, DE, and HL – to perform some 16-bit operations.
How many different instructions are possible in an 8-bit microprocessor?
In a processor with an 8 bit wide ALU the number of instructions can be more than 256 if multi-byte instructions are allowed. The 8085, Z80, 8086, 6809, 68HC11 are all examples of how this works.
What is a 8085 microprocessor?
The Intel 8085 (“eighty-eighty-five”) is an 8-bit microprocessor produced by Intel and introduced in March 1976. It is a software-binary compatible with the more-famous Intel 8080 with only two minor instructions added to support its added interrupt and serial input/output features.
How many basic instructions does 8085 microprocessor?
246 instructions
8085 has 246 instructions. Each instruction is represented by an 8-bit binary value. These 8-bits of binary value is called Op-Code or Instruction Byte.
What is the meaning of 8-bit?
8-bit is a measure of computer information generally used to refer to hardware and software in an era where computers were only able to store and process a maximum of 8 bits per data block. This limitation was mainly due to the existing processor technology at the time, which software had to conform with.
Which is the first 8-bit microprocessor?
Faggin led Intel’s development of the world’s first microprocessor, the 4-bit 4004 released in 1971, and the first 8-bit processor, the 8008, in 1972.
What are the functions of 8085 microprocessor?
The architecture of the 8085 microprocessor mainly includes the timing & control unit, Arithmetic and logic unit, decoder, instruction register, interrupt control, a register array, serial input/output control. The most important part of the microprocessor is the central processing unit.
Why is it called 8-bit?
In computer science, the term word refers to the standard computational unit of a machine. That means an 8-bit processor has a word that’s eight bits long, which in turn means that the C.P.U. processes eight bits in one operation.