Computer
Fundamentals (CF)
Class#01 (Concept of IT)
1. What is Secondary
Memory and write some examples?
Answer: Secondary
Memory refers to the external storage device which can be used to store data or
information permanently. Hard Disk, CD, DVD, USB Drive, Memory Card are some
examples of secondary memory in computers.
2. What is the full form
CD & DVD?
Answer: CD stands for
Compact Disc. DVD stands for Digital Versatile Disc.
3. What is the storage
capacity of a CD & DVD?
Answer: A CD can store
650 MB of data. A DVD can store over 4 GB of data.
4. Write down some output
device name.
Answer:
Projection devices, Speakers and headphones, Speech synthesizers, Printers.
5. Describe about Speech
synthesizers.
Answer:
Speech synthesizers is a recent development which has ability not only to
display text on a monitor but also to read the text to user. Thus, a user could
receive a text email from a colleague and the system could read that email to
user.
6. Describe about Projection
devices.
Answer:
These are projection devices which can be attached to a computer and are useful
for displaying presentations to a group of people. They are best used in
combination with presentation programs, such as Microsoft PowerPoint. They are
used within education and are also very popular for sales presentations.
7. What is mobile phone?
or cell phone?
Answer: The Mobile
phone is a portable electronic device that used for generally mobile
communication, SMS for text messaging, email accessing and radio hearing etc.
8. What is Smart
phone?
Answer: A smart phone
is a portable device that combines mobile telephone and computing functions in
one unit
9. What are the
differences between mobile phone and smart phone?
Answer: Mobile phone
offer texting and calling functionality whereas Smart phone offer a list of
features including email, Internet access, video chatting, gaming, app
downloading, video talking music storage etc.
10. System unit is the
part of what?
Answer: Hardware
11. When the PC industry
began?
Answer: 1977
12. What are the first off,
the shelf computer as a consumer product?
Answer: Apple, Radio
Shack, Commodore.
13. When IBM introduced
their IBM PC?
Answer: 1981
1 What is hardware?
Answer: In general,
Hardware are the things of a computer that can physically be touched. Actually,
the term hardware refers to the physical components of a computer such as the
system unit, mouse, keyboard, monitor etc.
1 How many bits are
there in a byte?
Answer: 8 bits
1 Which of the unit
represents the largest amount of data?
Answer: Terabyte
1 Name some of the
storage media?
Answer: CD, DVD, USB flash drive etc.
1 What is the main
working memory used in the computer?
Answer: RAM
1 What does RAM stand
for?
Answer: Random Access Memory
Where is RAM located?
Answer: In mother board
2 What is the main task
of input device?
Answer: Input device allow us to input
information or command to the computer and include things such as keyboard or
mouse.
Write down some input
device name
Answer: Keyboard, Mouse, Scanners,
Tracker Ball, Touch Pad, Joysticks, Webcams, Microphones- These all are input
device.
2 What is the full
meaning of OCR?
Answer: Optical Character Recognition
2 What is the main task
of OCR?
Answer: OCR is a specialist programs
which are specifically designed for converting printed text into editable text
within your application.
2 What is Software?
Answer: Software is The Collection of
Instructions Which Makes the Computer Work.
What is an Operating
System?
Answer: The Operating System is a Special
Type of Program Which Load Automatically when you start your computer.
Write down the examples
of application software.
Answer: Examples of application software are
given below:
a) Database
b) Word
Processing
c) Spreadsheets
d) Presentation
e) Emailing
f) Web
Browsing
g) Photo
Editing
h) Computer
Games
2 What is mobile phone?
or cell phone?
Answer: The Mobile phone is a portable
electronic device that used for generally mobile communication, SMS for text
messaging, email accessing and radio hearing etc.
2 What is a Smart phone?
Answer: A smart phone is a portable
device that combines mobile telephone and computing functions in one unit.
What is the
differences between mobile phone and smart phone?
Answer: Mobile phone offer texting and calling
functionality whereas Smart phone offer a list of features including email,
Internet access, video chatting, gaming, app downloading, video talking music
storage etc.
3 What is web cam?
Answer: A webcam is a digital video
device commonly built into a computer. It main function is to transmit picture
over the internet.
What is digital
camera?
Answer: Digital camera is a hardware
device that take photograph and store the image as data on a memory card.
3 What is microphone?
Answer: Microphone is a hardware device
that translate sound vibration in the air into electronic signal or scribes
them to a recording medium.
What is the definition
of CPU?
Answer: The central processing unit (CPU)
is the principal part of any computer system, is generally composed of the
control unit, Arithmetic Logic Unit (ALU) and, registers. It forms the physical
heart of the entire computer system. The CPU is called the processor.
3 What is the full
meaning of "CPU" and "ALU"?
Answer: Central Processing Unit (CPU)
and, Arithmetic Logic Unit (ALU).
3 What is the primary
component of a computer?
Answer:
a)
Central
processing unit (CPU).
b)
Types
of Memory.
c)
The
hard disk.
d)
Input
and output devices.
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