Computer System Organization

Q.1. A list of input devices are given below
1. Keyboard 2. MICR 3. OMR
4. Scanner 5. Joystick 6. Light Pen
7. Bar Code Reader
Select the most appropriate one for the following situations:
a. Artists and architects use this device to develop computerized designs.
b. A person wants to place his own photograph as the desk top wall paper of his computer.
c. This device is most commonly used by the children for playing computer games.
d. For valuation of objective type examination.
e. Quick processing of cheques and DDs in banks.
Q.2. The requirements of three customers are given below
One of them runs a digital studio and he wants high quality print-outs of photographs.
The second one runs a busy provision store and he needs to print all the sales bills.
The third one is a manager of a company and he wants to take good quality print outs often.
a. Suggest the most appropriate
Printer for each customer.
b. Justify your proposal by listing the features of each.
1. Dot Matrix Printer
2. Ink Jet Printer
3. Laser Printer

Q.5. Establish the best relationships among in the following table.
EPROM CPU Speeds Up CPU access
DVD Primary Memory Temporary Memory
Cache Programs once stored can be changed Arithmetic and logic Operations

Accumulator register Huge Capacity
Optical


Computer Memory
1. Primary Memory
2. Secondary Memory
Primary Memory
1. RAM
2. ROM
ROM  Read Only Memory
ROM contains permanent programs like
POST  Power On Self Test
BIOS  Basic Input Output System
These Programs are used for Booting
Booting means getting ready
3. PROM  Programmable read only memory
4. EPROM  Erasable Programmable Read Only Memory
5. EEPROM  Electrically Erasable Programmable Read Only Memory

Cache Memory