CS001 Assignment 1 Solution Fall 2017

CS001 Assignment 1 Solution Fall 2017:

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CS001 -Computer Proficiency License Assignment 1 Solution Fall 2017:

Assignment No.1

Fall – 2017

CS001

Complete Solution

Question No.1:

RAM

RAM stands for random access memory. It is like something written on sand which is temporary and would be erased. It is temporary memory, also called volatile memory. RAM stores information which is currently processed by computer. When power off, it loses all the information. Data can be read, stored, modified or delete from the RAM.

ROM

ROM stands for read only memory. It is a storage device from which only stored information can Be read. It can’t be modified, delete or removed. It is like something written on stone that cannot be removed or changed once written. It is permanent storage devise and data remains safe on ROM even when computer is off. It contains information related to computer startup process which is written at the time of memory manufacturing. Computer cannot start without ROM.

Differentiate between RAM and ROM

A ROM chip is non-volatile storage and does not require a constant source of power to retain information stored on it. When power is lost or turned off, a ROM chip will keep the information stored on it. In contrast, a RAMchip is volatile and requires a constant source of power to retain information.

•   A ROM chip is used primarily in the startup process of a computer, whereas a RAM chip is used in the normal operations of a computer after starting up and loading the operating system.

•     Writing data to a ROM chip is a slow process, whereas writing data to a RAM chip is a faster process.

•     A RAM chip can store multiple gigabytes (GB) of data, ranging from 1 GB to 256 GB per chip. A ROM chip stores several megabytes (MB) of data, typically 4 MB or 8 MB per chip.

▪      DRAM

▪      SRAM

▪      DRDRAM

Subtypes of ROM

•     PROM

•     EPROM

•     EEPRO

Question No.2:

Sr. No.	Input devices	Output Devices	Storage Devices/Memory
1	Webcam	Projector	ROM
2	USB Flash Drive	Printer	Compact Disk
3	Scanner	Flat panel	RAM
4	Microphones	Speaker
5	Remote	Liquid Crystal Display
6	Pen or Stylus	Bar Code Reader
7	Floppy drive
8	Plotter
9	Joystick
10	Touch Screen

11               Finger Print Scanner

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