Worksheetscomputer hardware part1
Total questions: 100
Worksheet time: 50mins
What is a computer described as in the document?
A mechanical device
An electronic device
A manual device
A chemical device
What does a computer use to operate according to the document?
Solar energy
Wind energy
Electric energy
Thermal energy
What is a computer program according to the document?
A set of unrelated instructions
A set of related instructions
A random collection of data
A single command
How is digital data described in the document?
Continuous in nature
Discrete in nature
Random in nature
Fluid in nature
What is the nature of analogue data as per the document?
Discrete
Random
Continuous
Static
What is the process of collecting all items of data together and converting them into information called?
Data Analysis
Data Processing
Data Storage
Data Mining
Which of the following is NOT a characteristic of information?
Unprocessed facts or figures
Arranged into a meaningful format
More meaningful to the user
Can be used to make decisions
What does the term "Garbage in Garbage Out (GIGO)" imply in computing?
Computers can correct any input errors automatically
Incorrect input leads to incorrect output
Computers can process any data without errors
Data processing is always accurate
Which characteristic of computers allows them to perform many functions within a very short time?
Accuracy
Reliability
Speed
Versatility
How does a computer ensure accuracy in its operations?
By using manual checks
Through in-built, self-checking features
By relying on user input
By processing data slowly
What is a Computer?
A device for cooking
A machine for processing data
A type of vehicle
A musical instrument
Why is a computer referred to as an electronic device?
Because it uses water
Because it uses electricity
Because it is made of wood
Because it is used outdoors
Define the following terms as used in computer science: Data.
A type of food
Raw facts and figures
A musical note
A type of clothing
Define the following terms as used in computer science: Programs.
A type of dance
Instructions for a computer
A type of plant
A type of animal
Define the following terms as used in computer science: Data processing.
Cooking data
Storing data
Manipulating data to produce information
Destroying data
Define the following terms as used in computer science: Information.
Processed data
Unprocessed data
A type of game
A type of sport
The speed of a computer is measured in __________.
Hertz
Bytes
Watts
Meters
What does the term GIGO stand for?
Great Input, Great Output
Garbage In, Garbage Out
Good Information, Good Output
General Input, General Output
List and explain 4 salient features/properties of a computer.
Speed, Accuracy, Diligence, Versatility
Color, Size, Shape, Weight
Taste, Smell, Texture, Temperature
Height, Width, Depth, Volume
List FIVE advantages of a computerized system over a manual system.
Speed, Accuracy, Storage, Consistency, Automation
Slowness, Inaccuracy, Limited Storage, Inconsistency, Manual Labor
High Cost, Complexity, Maintenance, Power Consumption, Noise
Simplicity, Low Cost, Manual Effort, Limited Functionality, Inflexibility
Which component of a computer is referred to as the 'brain'?
Motherboard
Central Processing Unit (CPU)
Power supply unit
Disk drive
What is the primary function of disk drives in a computer system?
To process data
To supply power
To store, record, and read data
To connect to the internet
Which type of system unit is designed to be placed on the floor?
Desktop system unit
Tower style system unit
Laptop system unit
Portable system unit
What is a key difference between tower style and desktop system units?
Tower style units are more portable
Desktop units have more space for expansion
Tower style units have more space for expansion
Desktop units are designed to be placed on the floor
What is the main function of the Central Processing Unit (CPU) in a computer?
To store data permanently
To carry out all processing within the computer
To display output on the screen
To connect to the internet
Which device is used to enter data into a computer by pressing keys?
Monitor
Printer
Keyboard
Mouse
What is the role of output devices in a computer system?
To input data into the computer
To process data within the computer
To give the end results of data that was entered into the computer
To store data temporarily
Which of the following is an example of a peripheral device?
CPU
RAM
Printer
Hard Drive
How are peripheral devices connected to the system unit?
Using wireless signals
Using data interface cables and ports
Using Bluetooth
Using infrared signals
List down the components that make up a computer.
Monitor, Mouse, Printer, Keyboard
Table, Chair, Lamp, Book
Window, Door, Roof, Wall
Pen, Pencil, Eraser, Sharpener
What are computer peripherals?
Internal components of a computer
External devices connected to a computer
Software programs installed on a computer
Types of computer viruses
Name and explain the two main divisions of computer storage.
Primary and Secondary storage
Input and Output storage
Hardware and Software storage
Temporary and Permanent storage
What is a Mouse in relation to computing?
A type of computer virus
A pointing device used to interact with a computer
A software program for editing text
A storage device for saving files
How is a number represented using an Abacus?
By moving beads to the crossbar
By writing numbers on paper
By using a calculator
By typing on a keyboard
What was the first machine regarded as the forerunner of modern computers?
The Abacus
The Analytical Engine
Mark 1
ENIAC
Who developed the Analytical Engine?
Howard Aken
Charles Babbage
Alan Turing
John von Neumann
What was the name of the first computer-like machine designed by Professor Howard Aken?
ENIAC
Mark 1
Analytical Engine
UNIVAC
What electronic components did the 1st generation of computers use to store and process information?
Transistors
Integrated Circuits
Vacuum tubes
Microprocessors
What was a major disadvantage of the vacuum tubes used in 1st generation computers?
They were too small
They consumed a lot of power and generated excessive heat
They were too cheap
They were very reliable
What type of memory did 1st generation computers use?
Flash memory
Magnetic drum memories
Solid-state drives
Optical discs
What was the approximate maximum memory size of 1st generation computers?
2 MB
2 GB
2 KB
2 TB
What was the speed of the earliest electronic computer, ENIAC, measured in?
Microseconds
Milliseconds
Nanoseconds
Seconds
Which of the following was a characteristic of 2nd generation computers?
Used vacuum tubes
Used transistors
Used integrated circuits
Used magnetic tapes
What was the RAM memory size expanded to in 2nd generation computers?
16 KB
32 KB
64 KB
128 KB
Which of the following is an example of a 1st generation computer?
IBM 1401
UNIVAC
ATLAS LEO Mark III
HONEYWELL 200
What electronic device was used in 3rd generation computers?
Vacuum tubes
Transistors
Integrated Circuits
Magnetic core memories
What was the processing speed of 3rd generation computers?
5 Million instructions per second
50 Million instructions per second
1 Billion instructions per second
100 Million instructions per second
Which type of circuits did 4th generation computers use?
Large Scale Integrated (LSI) and Very Large Scale Integrated (VLSI)
Small Scale Integrated (SSI) and Medium Scale Integrated (MSI)
Ultra Large Scale Integrated (ULSI) and Nano Scale Integrated (NSI)
Micro Scale Integrated (MSI) and Pico Scale Integrated (PSI)
What was the storage capacity range of 5th generation computers?
1 Megabyte to 10 Megabytes
1 Gigabyte to 1 Terabyte
500 Megabytes to 2 Terabytes
100 Megabytes to 500 Megabytes
What is a characteristic feature of 5th generation computers?
Use of magnetic tapes
Parallel architectures and super conducting materials
Vacuum tubes
Punch cards
What does VLSI stand for?
Very Large Scale Integration
Very Large System Integration
Very Low Scale Integration
Very Light Scale Integration
Which technology is associated with the second generation of computers?
Transistors
Thermionic valves (Vacuum tubes)
Integrated Circuits
Very Large Integrated Circuit
What is a key feature of computers using Artificial Intelligence?
They rely on human professionals for decision-making.
They use simple instruction sets.
They mimic human intelligence.
They are only used for basic calculations.
Match the third generation of computers with the technology used to develop them.
Very Large Integrated Circuit
Thermionic valves (Vacuum tubes)
Transistors
Integrated Circuits
What is the main function of the CPU in a microcomputer?
To store data permanently
To process instructions
To provide power supply
To connect to the internet
Which factor affects the processing speed of a computer?
Amount of RAM
Type of keyboard
Color of the monitor
Size of the mouse
How is the speed of an output device in a microcomputer measured?
Gigabytes per second
Characters printed per second
Megabytes per minute
Pixels per inch
What is the relationship between the cost of a computer and its size?
Larger computers are less costly
Smaller computers are more costly
Cost is directly related to size
Cost is unrelated to size
Which type of computer can support hundreds of users at the same time?
Microcomputers
Mainframes
Smartphones
Tablets
Which of the following is a factor used to classify computers?
Color of the computer
Physical size and processing power
Brand of the computer
Year of manufacture
What is a characteristic of supercomputers?
They are the smallest type of computers.
They are used for simple calculations.
They are the fastest and most powerful computers.
They are operated by non-specialists.
Why do supercomputers require special cooling systems?
They are used in cold environments.
They generate a lot of heat.
They are very small in size.
They are used for simple tasks.
In which area are supercomputers NOT typically used?
Weather forecasting
Word processing
Petroleum research
Aerodynamic design and simulation
What is the purpose of using liquid Fluorocarbon in supercomputers?
To enhance processing speed
To provide cooling
To increase storage capacity
To improve user interface
Which of the following is a characteristic of mainframe computers?
They are more powerful than supercomputers.
They are less expensive than supercomputers.
They are smaller than minicomputers.
They cannot handle multiple users at the same time.
In which area are mainframe computers commonly used?
Personal home computing
Small retail stores
Government departments
Mobile app development
What is one example of a mainframe computer?
IBM 4381
Apple MacBook
Raspberry Pi
Dell Inspiron
How do minicomputers compare to mainframe computers in terms of size?
Minicomputers are larger than mainframes.
Minicomputers are the same size as mainframes.
Minicomputers are physically smaller than mainframes.
Minicomputers are larger than supercomputers.
Where are minicomputers mainly used?
Personal gaming
Scientific laboratories
Online shopping
Social media management
What is a key characteristic of microcomputers?
They are designed to be used by multiple people at a time.
They are larger and more expensive than minicomputers.
They consist of very few connected units.
They have a very large internal memory.
Which of the following is a reason why microcomputers have become very popular?
They are slower than mainframe computers.
They consume more power than other computers.
They are more expensive than minicomputers.
They are more energy efficient.
Where are microcomputers commonly used?
Large industrial factories
Training and learning institutions
Space exploration centers
Large-scale manufacturing plants
What is a defining feature of laptops?
They are designed to be used by multiple users simultaneously.
They are large and not portable.
They operate mainly on electricity or by rechargeable batteries.
They have no in-built disk drives.
Why are laptops generally more expensive than desktop computers?
They have larger screens.
They are more durable.
They have advanced power management capabilities.
They are easier to repair.
What is a common use for palmtop computers?
Graphic design.
Personal organization.
Video editing.
Gaming.
Which of the following is a characteristic of a home computer?
It is used mainly for business purposes.
It is a low-cost microcomputer for domestic use.
It is larger and more powerful than a PC.
It is used for high-end scientific calculations.
How does a workstation differ from a typical personal computer?
It is smaller and less powerful.
It uses 16-bit microprocessors.
It is larger and more powerful.
It is designed for gaming.
What is an embedded computer?
A computer that is part of another device or system and not accessed directly
A computer used for general-purpose tasks
A computer designed for high-resolution graphics
A computer that can run multiple applications at the same time
Which of the following is an example of a general-purpose computer?
A robot used in manufacturing
A mobile phone used for communication
A laptop used in offices and schools
A calculator used for calculations
What is the main characteristic of a special-purpose computer?
It can perform a wide variety of tasks
It is dedicated to a single task
It has high-resolution graphics
It can run multiple applications simultaneously
Which of the following is NOT an example of a special-purpose computer?
Front End Processor (FEP)
Mainframe computer
Robot used in manufacturing
Calculator for calculations
Why is a mobile phone regarded as a computer?
It is mechanical.
It has a screen.
It is non-programmable.
It lacks a keypad.
What is a dedicated computer?
A computer that can only perform one task.
A general-purpose computer committed to some processing task.
A computer that cannot be programmed.
A computer used only for gaming.
Which of the following is NOT a type of computer based on data processing?
Digital computers
Analogue computers
Hybrid computers
Mechanical computers
What is the basis of operation for digital computers?
Continuous data
Two states: "ON" & "OFF"
Infinite states
Random states
Which of the following is an example of a digital computer?
An abacus
A sundial
A calculator
A mechanical clock
What is an analogue computer primarily used for?
Performing complex calculations
Operating on continuous data
Storing large amounts of data
Running multiple applications simultaneously
Which of the following is an example of an analogue device?
Digital clock
Laptop
Bathroom scale
Smartphone
How do analogue computers process data?
By using binary code
By measuring changes in physical attributes
By storing data in databases
By executing software programs
In which area are analogue computers NOT typically used?
Scientific experiments
Military weapons
Word processing
Weather stations
What is a characteristic of analogue computers mentioned in the text?
They are very slow
They use multiple processors
They are not accurate
They are used for general-purpose tasks
What are hybrid computers designed to process?
Only analogue data
Only digital data
Both analogue and digital data
Only binary data
Why are hybrid computers more expensive?
They use outdated technology
They combine digital and analogue capabilities
They are smaller in size
They have limited functionality
In what scenario might an analogue device be used in a hospital?
To play music
To measure a patient's heart rate
To calculate medication dosages
To display patient information
Which of the following is a characteristic of computers compared to calculators?
Cheaper due to simple technology
Operate at very high speeds
Mostly used for numerical calculations
Have no telecommunication capabilities
What is a key difference between a computer and a calculator in terms of user capacity?
A computer can support several people at the same time
A calculator can support several people at the same time
Both can support only one user at a time
Both can support multiple users simultaneously
Which of the following is NOT a feature of calculators?
Have large internal memory
Use registers for temporary storage
Non-programmable with limited range
Serve only one user at a time
What is one advantage of using computers in terms of data processing speed?
Computers are slower than typewriters.
Computers process data faster than calculators.
Computers require more effort to process data.
Computers are less efficient than human beings.
How do computers enhance security and confidentiality?
By allowing unauthorized access to data.
By storing data in an unprotected manner.
By protecting data from unauthorized individuals.
By making data easily accessible to everyone.
Which of the following is a disadvantage of using computers?
Computers are very cheap to purchase and maintain.
Computers can be used without a power source.
Computers are very costly in terms of purchase and maintenance.
Computers can operate without any defined procedure.
