Computers and Systems

Question 1

Explain what the hardware component does

Answer 1

*Processes data by executing instructions
*Provides input and output
*Control input, output, and storage components

Question 2

Explain what software comp deals with

Answer 2

*Applications and system software
*Instructions tell hardware exactly what tasks to
perform and in what order

Question 3

Describe what data is

Answer 3

*Fundamental representation of facts and
observations

Question 4

Describe what’s meant by communications

Answer 4

*Sharing data and processing among different
systems

Question 5

Describe hardware component

Answer 5

*Input / Output devices
*Storage Devices
*CPU – Central Processing Unit
*ALU: arithmetic/logic unit
*CU: control unit
*Interface unit
*Memory
*Short-term storage for CPU calculations

Question 6

What does CPU stand for?

Answer 6

CPU: Central Processing Unit

Question 7

Explain the 3 parts of CPU

Answer 7

ALU: arithmetic/logic unit
*Performs arithmetic and Boolean logical
calculations
CU: control unit
*Controls processing of instructions
*Controls movement of data within the CPU
Interface unit
*Moves instructions and data between the CPU
and other hardware components
*Bus: bundle of wires that carry signals and
power between different components

Question 8

Explain what’s meant by memory and what’s it responsible for

Answer 8

Also known as primary storage, working
storage, and RAM (random access
memory)
*Consists of bits, each of which hold a
value of either 0 or 1 (8 bits = 1 byte)
*Holds both instructions and data of a
computer program (stored program
concept)

Question 9

Explain software component

Answer 9

Applications
*Operating System
*API: application program
interface
*File management
*I/O
Kernel
*Memory management
*Resource scheduling
*Program communication
*Security
*Network Module

Question 10

Explain communication component in detail

Answer 10

Hardware
*Communication channels
*Physical connections between computer systems
*Examples: wire cable, phone lines, fiber optic cable,
infrared light, radio waves
Interface hardware
*Handles communication between the computer and
the communication channel
*Modem or network interface card (NIC)
Software
*Establish connections
*Control flow of data
*Directs data to the proper applications for use

Question 11

What do all computer systems consist of?

Answer 11

*At least one CPU
*Memory to hold programs and data
*I/O devices
*Long-term storage

Question 12

What does (operating) system software do?

Answer 12

-Manage your files
-load and execute programs
-to accept your demand