A memory with 8-bit data bus and 8-bit address bus can store a maximum of

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URSC ISRO Technical Assistant Electronics 20 August 2017 Official Paper
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  1. 256 bytes
  2. 256 bits
  3. 1K bytes
  4. 512 bytes

Answer (Detailed Solution Below)

Option 1 : 256 bytes
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Detailed Solution

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Concept:

  • The maximum number of bytes directly addressable in a computer depends on the number of bits in the memory address.
  • For an n-bit address bus, the memory can store:

          M ≤ 2n Bytes, since an 8-bit represents a byte.

Calculation:

Given Address bus = 8-bit

A maximum number of bytes the memory can store will be:

M = 28 Bytes

M = 256 Bytes

26 June 1

A typical representation of memory locations for an 8-bit address bus is as shown:

F1 S.B Madhu 16.03.20 D5

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