Machine Language:
• The number of bits that form the “word” of a microprocessor is fixed for that particular processor. – These bits define a maximum number of combinations.
• For example an 8-bit microprocessor can have at most 28 = 256 different combinations.
• However, in most microprocessors, not all of these combinations are used. – Certain patterns are chosen and assigned specific meanings. – Each of these patterns forms an instruction for the microprocessor. – The complete set of patterns makes up the microprocessor’s machine language.
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• Memory stores information such as instructions a
The Three Cycle Instruction Execution Model• To execute a program, the microprocessor “reads” each instruction from memory, “interpr- Differences between Microprocessor, Microcomputer and MicrocontrollerDifferences between Microprocessor, Microcomputer and Microcontroller:
Microcomputer – a
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