City Guilds Model Questions Vol1 2019 Information Technology Question 1

Practice practical question 1 from the 2019 City Guilds Model Questions Vol1 Information Technology examination. This question covers Addressing, Memory organisation, External storage mapping .

City Guilds Model Questions Vol1 2019 Information Technology Practical
Topics: Addressing Memory organisation External storage mapping
Question 1 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2019 • INFORMATION_TECHNOLOGY • practical

A computer laboratory is being set up with the following specifications: - Each workstation uses a 16‑bit address bus and an 8‑bit data bus. - Main memory installed is 48 KB of RAM. - A ROM of 8 KB stores the BIOS. - The lab manager wants to connect a set of identical external storage devices, each requiring a unique address range of 4 KB. Answer the questions that follow.

Question Parts

( a )
Determine the minimum number of address lines required to address the combined memory (RAM + ROM) fully.
( b )
If the address bus is limited to 16 bits, calculate the maximum number of 4 KB external storage devices that can be mapped without overlapping the existing RAM and ROM address spaces.
( c )
Propose a simple addressing scheme for the maximum number of devices found in part (b). State the starting and ending hexadecimal addresses for the first and the last device.

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This is City Guilds Model Questions Vol1 2019 Information Technology Question 1. It is one of the practical questions from the 2019 City Guilds Model Questions Vol1 Information Technology examination.

The question covers Addressing, Memory organisation, External storage mapping .

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