Computer studies analysis of questions and answers

INTRODUCTION TO COMPUTERS: MIND BLOWING QUESTIONS AND ANSWERS

17/7/2019

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INTRODUCTION TO COMPUTERS: MIND BLOWING QUESTIONS AND ANSWERS

As you study computer studies, under introduction to computers topic, definition and parts of a computer sub-topic, seek to answer the following questions.

What is a computer?
Define the terms:
1. data
2. information
Differentiate between data and information.
Explain why a phrase such as '1980' is data and not classified as information.
Draw a well labelled diagram to illustrate information processing cycle.
State the three functions of a computer.
What is the major purpose of a computer?
State advantages and disadvantages of computers.
State six computer features that makes them smarter than humans.
State five similarities between computers and humans.
State five differences between humans and computers.
Describe the four major parts of a computer.
Why is a computer described as:
1. electronic device;
2. processing device
3. programmable
Why is a computer chassis also referred to as the system Unit?
State the importance of a monitor in computer operations and why it is referred to as the video display unit (VDU).
What is a computer program?
What are peripheral devices?
List any six peripheral devices.
Differentiate between the CPU and the System Unit.
List six components housed inside the computer chassis.
Using a well illustrated diagram, explain how a computer operates.
Why do we study computer studies?
State the difference between a desktop system unit and a tower system unit.
1. Other than a desktop and a laptop, state any other six devices that can be described as a computer.
2. What features/characteristics made you classify those devices (above) as computers.
Write the following acronyms in full and describe what they are:
1. VDU
2. ICT
3. PC
4. CPU
5. µP

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JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS

5/7/2019

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PREVIOUSLY << DEFINE THE FOLLOWING TERMS; 1) FILE; 2) RECORD; 3) FIELD

JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS

1. Write the following acronyms in full

OBR -
Optical Barcode Reader
OCR -
Optical Character Recognition
OMR -
Optical Mark Recognition
MICR -
Magnetic Ink Character Recognition
MRI -
Magnetic Resonance Imaging

2. State advantages of the keyboard over a mouse

Keyboard can input text data, a mouse cannot.
A keyboard can operate a computer without a mouse but a mouse cannot fully operate the computer without a keyboard.
A keyboard can work on a multiple operating system such as command line interface, while a mouse only works on graphical user interface and menu driven interface.
A keyboard has more operating and input features as compared to a mouse these features include function keys, special PC operation keys, data movement and editing keys and alphanumeric and numeric keypad keys. These features almost does everything to accomplish a task with a computer. While a mouse can only input instructions/commands.

3. Which input devices is recommended for use by blind people.

Braille keyboard
Voice input
Smart gloves (turning sign language to text)

4. Distinguish between magnetic and optical scanners

Magnetic scanners capture data using magnetic technology, while optical scanners capture data using a directed beam of light.

5. State two advantages of using a light pen over other input devices

With a light pen, digital signatures are possible.
It is easier to make drawings with light pen than other input devices.

6. State 3 factors to consider when purchasing/selecting input devices.

What the device is intended for
what are you intending to use this device for?
Bulkiness of the device / portability / stationery
this is how big or small the machine is and if it can be carried from one place to another for use or not
Amount of work to be handled
bulky work needs faster machines
Type of input data
it can be text, voice, instruction, sign language etc.
Initial Cost
the cost of buying the input device
Maintenance cost
this is the cost at which the buyer incur after the machine malfunction
Warranty / documentation
agreement between the buyer and seller on terms of after sale service and prove of purchase
User-friendliness
the interaction with users should be easy and friendly
User ability / disability
there are users with disability such as blind,crippled or dumb
Quality of input device
e.g. water proof, coating materials that can guarantee durability, power consumption etc.
The speed at which the input device captures data
this is the frequency at which it captures over a given duration of time. Input devices such as scanners are faster than keyboard and more accurate.
Hardware / software compatibility
ability for its software to work with other available software packages
Upgradability
capability of being improved in functionality by the addition or replacement of components or software.
Interface / connectivity
The type of interface used for connectivity should be available for your computer hardware. In most cases, USB and HDMI interface is used.
Versatility
This is the ability of a machine to adapt to other functions other than input data. The functions may include printing and photocopying.

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INTRODUCTION TO COMPUTERS: MIND BLOWING QUESTIONS AND ANSWERS

INTRODUCTION TO COMPUTERS: MIND BLOWING QUESTIONS AND ANSWERS

JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS

JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS

1. Write the following acronyms in full

2. State advantages of the keyboard over a mouse

3. Which input devices is recommended for use by blind people.

4. Distinguish between magnetic and optical scanners

5. State two advantages of using a light pen over other input devices

6. State 3 factors to consider when purchasing/selecting input devices.

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INTRODUCTION TO COMPUTERS: MIND BLOWING QUESTIONS AND ANSWERS

INTRODUCTION TO COMPUTERS: MIND BLOWING QUESTIONS AND ANSWERS

JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS

JUNE 2019, FORM 1 COMPUTER STUDIES MIND BLOWING QUESTIONS AND ANSWERS

​1. Write the following acronyms in full

​2. State advantages of the keyboard over a mouse

3. Which input devices is recommended for use by blind people.

​4. Distinguish between magnetic and optical scanners

5. State two advantages of using a light pen over other input devices

​6. State 3 factors to consider when purchasing/selecting input devices.

Categories

Archives

1. Write the following acronyms in full

2. State advantages of the keyboard over a mouse

4. Distinguish between magnetic and optical scanners

6. State 3 factors to consider when purchasing/selecting input devices.