Lesson 1

Question 1

electronic device

Answer 1

Computer

Question 2

Operates under the control of instruction stored in its own memory unit.

Answer 2

Computer

Question 3

stores data in discrete units and perform arithmetical and logical operations at very high speed. Example: Laptop

Answer 3

Digital Computers

Question 4

Computers based on the type of data

Answer 4

Digital Computers
Analog Computers
Hybrid Computers

Question 5

have no memory and are slower; have continuous rather than discrete input; widely used in laboratory equipment to monitor ongoing, continuous changes and records/graph these.Example: Abacus, Printing Press, Typewriter, Analog cp

Answer 5

Analog Computers

Question 6

combined the feature of Digital Computers and Analog Computer
Example: ATM Machine, Ultrasound Machine. Gas Pump

Answer 6

Hybrid Computers

Question 7

5 Categories of a Hardware

Answer 7

1) Input – (Scanner, mouse, keyboard, sensor,)
2) Processing – CPU, memory, RAM
3) Output – (monitor, speaker, printer)
4) Storage – (hard disk, Flash disk, CD, DVD)
5) Communications – (modem, router, hub, LAN Card)

Question 8

regulates the supply of electricity to the various components of the computer.

Answer 8

Power Supply

Question 9

contains the commands your computer needs to get itself going. The_____ is non-volatile, meaning that the contents of _____ are retained even when the power is off. The instructions in _____ allow the computer to get started when the power is turned on.

Answer 9

ROM (Read Only Memory)

Question 10

most important of the system. It acts as the foundation of your computer and supplies all of the electrical connections between components.

Answer 10

Motherboard

Question 11

is the working memory of the computer. For instance, when you run a program, it is loaded from your hard disk into ___ and remains there while you use it. You have to save work onto a disk whatever is in _______ gets erased when the computer is turned off.

Answer 11

RAM (Random Access Memory)

Question 12

allow you to write information to, and read, floppy diskettes the computer’s expansion slots.

Answer 12

Floppy Drives

Question 13

extends the abilities of your computer. These boards are inserted into the computer’s expansion slots.

Answer 13

Add-On Boards

Question 14

Central Processing Unit has 3 different parts

Answer 14

a) Arithmetic/ Logic Unit (ALU) -
b) Instruction Control Unit (ICU)-
c) Memory (Registers) -

Question 15

brain of the computer. The ____ is a chip that actually processes instructions and carries out commands. Every other part of your computer serves the microprocessor so it can do its job.

Answer 15

Central Processing Unit

Question 16

performs arithmetic and Logic Operations.

Answer 16

Arithmetic/ Logic Unit (ALU) -

Question 17

coordinates the machine’s activities.

Answer 17

Instruction Control Unit (ICU)

Question 18

special memory cells in the CPU that are used as temporary holding places

Answer 18

Memory (Registers) -

Question 19

Stores data and program instructions.

Answer 19

Main memory

Question 20

here are two parts to the main memory

Answer 20

ROM and RAM

Question 21

Temporary storage that serves as the ‘working’ memory of the computer.
RAM’s memory contents can be changed, and are cleared when the power is turned off (i.e it’s volatile).
Very fast memory access

Answer 21

RAM (Random Access memory)

Question 21

It contains BIOS and start-up programs. The BIOS are instructions to perform many elementary functions such as telling the computer how to “be a computer” and to “boot itself up” or turn itself on.
Very slow compared to RAM memory

Answer 21

ROM (Read only memory)

Question 22

it is an external or internal device that connects the computer to a telephone line then to the Internet Service Provider and on to the Internet.

Answer 22

Modem

Question 22

it is an electrical or electronic device, which reads and codes patterns of light and dark areas on a sheet of paper.

Answer 22

Facsimile Machine – Fax Machine

Question 23

a part of the computer system that serves as its link to a ______. It is an accessory provision in the computer that is used to connect where the host or location of the computer is part of a networked environment.

Answer 23

LAN Card(Local Area Network)