Instruction set and encoding the dual- register set makes sense as the 280. Like most microprocessors at the time and it is very similar, load and store instructions.
The Intel 8080
The inter 8080 was the second 8-bit microprocessor designed and intel’s 8086 CPU architecture, which spawned the x6 family of processor. It used the same basic instruction set as the 808.
Intel 8086  
The 8086 is a 16-bit microprocessor chip designed by intel, it implemented an instruction set designed by data point corporation with time to counter the threat from the zilog 280.

History of the microprocessor computer   
Hoff was able to contrast the design with the DEC perform, intel CPU design to the 8086. in late 1969, after the 4004 instruction on se had been defined.
For example, the 8086 microprocessor family has these instructions by contrast, the produced instruction set computer (RISC) concept is to identify the speccy used the other popular processor. 5th February 2013 intel 8086 instruction set includes compare data blocks, set data block etc. 280 included move and search block instructions.
Back end table for the Intel 8080 micro-processor     
Except for two additional instructions the 8085 instruction set is identical and fully compatible with the 8080 instruction.
14 October 2011, a microprocessor is the heart, the soul as well as the brain of instruction set computers.

Types of microprocessors   
The different types of microprocessors induces:-
1.         8080 (1974) microprocessors
This increased the 4004’s word length from four to eight bits, and doubled the volume of information that could be processed.
2.         8080 ( was produce in the year (1974) this 8080 were 20 times as fast as the 4004 and contained twice as many transistors. This 8-bit chip represented a technological milestone. It was perhaps most notable as the processor in the first kit computer.
3.         8088 was produced in the year (1979) the created as a version of intel’s 8086, the 8088 was 16-bit processor with an 8-bit external bus. This chip became the most ubiquitous in the computer industry when IBM chose it for its first pc.
4.         80286 microprocessor was produced in the year (1982) with 16 MB of addressable memory and IGB of virtual memory, this 16-bit chip is referred to as the first modern microprocessor novices were introduced to desktop computing with a “286 machine” and it because the dominant chip 1 x s times it contained 130,000 transistors.
5.         80386 microprocessor it was produce in (1985), 80466 in (1989).
The price /performance curve continued its steep climb with the 386 and later the 486 – 32- bit processors that brought real computing to masses.
6.         4004 microprocessor produced in (1970) the 4004 processor, used in a hand-held calculator built by busicon of Japan, was part of a four –chip set called the 4000 family. 4 – bit microprocessors.
History, the 4 – bit microprocessors was the first general purpose microprocessor introduced on the market. The basign of the early microprocessor was derived from that of the desk calculator. The intel 4004, a 4-bit design, was the grandfather of microprocessors. It was not designed as a general –purpose computer. The shortcomings of the 4004 were recognized as soon as it was introduced. But it was the first general purpose computing device on a chip to be placed on the market many of the chips introduced at about the same time by other companies, infact, were calculations a single bit at a time.
Addressing mode
Addressing modes are the ways how architectures specify the address of an object they want to access. The x86 processor has many different
Addressing modes that can be used for a multitude of different purposes. The addressing mode has a unique formula to locate the operand, data could be in a different place of mm.

Types of addressing modes
1.                  Direct addressing mode
2.                  Register addressing mode
3.                  Random access memory (RAM)
4.                  Immediate addressing mode
This section describes data types and addressing modes available to programmes of the intel.
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