The maximum range that a microprocessor with a 20-bit address bus can directly address is 1MB. The capacity of a storage unit is "8bit", which is "1byte". A 20-bit address bus can retrieve "2^ 20" memory cells, so the addressability is "1MB".
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The address bus is 20-bit microprocessor and can be directly addressed The maximum range is 1MB.
The capacity of a storage unit is 8bit, which is 1byte. The 20-bit address bus can retrieve 2^20 storage units, so the addressing capability is 1MB.
Related introduction:
Microprocessor is a central processing unit composed of one or a few large-scale integrated circuits. These circuits perform the functions of control components and arithmetic logic components.
The microprocessor can complete operations such as fetching instructions, executing instructions, and exchanging information with external memory and logic components. It is the computing control part of the microcomputer. It can be combined with memory and peripheral circuit chips to form a microcomputer.
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