Chapter 1 - Introduction to Computer System (Part 1- Introduction to Computer)
Exercise
i.
CPU – Central Processing Unit
ii. RAM – Random Access Memory
iii. CBIS – Computer-Based Information System
iv. GIGO – Garbage In, Garbage Out
v. CD – Compact Disc
vi. DVD – Digital Versatile Disc (or Digital Video Disc)
vii. KB – Kilobyte
viii. MB – Megabyte
ix. GB – Gigabyte
x. EB – Exabyte
xi. CBE – Competency-Based Education
xii. CAD – Computer-Aided Design
2. Multiple
Choice Questions:
i. The word computer is derived from the Latin word
→ d. Computare
ii. The measurement of a second that is equal to one billionth of a second
→ c. Nanosecond
iii. When the input is wrong, then the output will also be wrong, it is termed
as
→ c. GIGO
iv. Repeatedly working capability of a computer is known as
→ c. Diligence
v. What is the most crucial component of a computer system, often referred
to as the "brain"?
→ c. CPU
vi. Which of the following is NOT a key characteristic of computers?
→ c. Intelligence
vii. In which area of application are computers not commonly used?
→ d. Traditional Craftsmanship
3. Give
appropriate technical terms for the following:
a.
A combination of hardware and software to perform tasks.
Computer
System
b.
An electronic device that processes and stores information according to a set
of instructions
Computer
C.
If the input is incorrect, the output is also wrong.
GIGO
(Garbage In, Garbage Out)
d.
The computers can be used for a wide range of tasks.
Versatility
e.
The ability to perform tasks or processes automatically, without human
intervention.
Automation
f.
The engineers can create detailed 2D and 3D models of products, buildings, or
machines.
CAD
(Computer-Aided Design)
g
Enter data into the computer.
Input
h.
Display meaningful information from the computer.
Output
i.
Store data and information for future use.
Storage
4. Short Answer
Questions:
a. Define a computer in your own words.
A computer is a machine that takes input, processes it, and gives output.
b. List three key characteristics of computers.
Speed, accuracy, and diligence.
c. Give an example of how computers are used in healthcare.
Computers help doctors check patient records and run medical tests.
d. How has the use of computers impacted education?
Computers make learning easy through online classes and digital books.
e. Why is a computer called a diligence machine? What is GIGO?
A computer never gets tired, so it's called diligent.
GIGO means wrong input gives wrong output – "Garbage In, Garbage
Out."
f. Explain the working principles of a computer with a block diagram.
A computer works in three steps: input, process, and output.
Block Diagram:
g. Convert as indicated:
i. 23 MB = 23 × 1024 = 23,552 KB
ii. 620 KB = 620 × 1024 = 634,880 bytes
5. Long answer
question
a.
Show concerning a block diagram, the structure of a digital computer system,
and the interconnection of various units. Explain the functions of various
units briefly.
A
digital computer system is made up of several parts that work together. These
parts include the Input Unit, Central Processing Unit (CPU), Memory Unit,
and Output
Unit.
Input Unit:
It takes data and instructions from the user. Example: keyboard, mouse.
Central Processing Unit (CPU):
It is the brain of the computer. It has two parts:
Control Unit (CU): Controls all
parts of the computer.
Arithmetic and Logic Unit (ALU): Does all
calculations and decisions.
Memory Unit:
Stores data and instructions temporarily (RAM) or permanently (Hard drive).
Output Unit:
Shows the result to the user. Example: monitor, printer.
b.
Explain any three application areas of the computer.
Education:
Computers are used in schools and colleges for learning, teaching, online
classes, and preparing notes or presentations.
Healthcare:
Doctors use computers for keeping patient records, checking medical reports,
and running machines like X-ray or ECG.
Banking:
Computers help in online transactions, ATM services, managing customer
accounts, and keeping records safe and fast.