WorksheetsY8 - How Computers Work
Total questions: 24
Worksheet time: 20mins
Choose the items below that are classified as software
A keyboard
A program for editing images
A mouse
The operating system
A file containing an image
Choose the items below that are classified as hardware
A keyboard
A program for editing images
A mouse
The operating system
A file containing an image
Which of the following are programs?
A word processor
An operating system
An image
The processor (CPU)
What does a program consist of?
Note: Answer with a single word.
(a)
Provide two examples of operating systems
What does a processor (CPU) do?
Stores programs
Stores data
Executes programs
Executes data
Processes data
What does the main memory (RAM) do?
Stores programs
Stores data
Executes programs
Executes data
Processes data
Provide two examples of storage devices
What is stored in storage devices?
Hardware components
Programs
Data
None of the above. The term ‘storage’ is misleading
Which of the devices below are input devices?
Mouse
Printer
Processor
Touchscreen
Sensors
Which of the devices below are output devices?
Mouse
Printer
Processor
Touchscreen
Sensors
You turn on your computer. As soon as it’s ready, you open a file containing a document and start editing it using a word processor.
If you take a snapshot of your system at that point, what will the processor (CPU) contain?
All the documents saved on your computer
All the programs installed on your computer
All the data for the document that you are editing
The instruction that is currently being carried out
Data for the instruction that is currently being carried out
You turn on your computer. As soon as it’s ready, you open a file containing a document and start editing it using a word processor.
If you take a snapshot of your system at that point, what will the main memory (RAM) contain?
All the documents saved on your computer
All the programs installed on your computer
All the data for the document that you are editing
All the instructions contained in the word processing program
All the instructions contained in the operating system
You turn on your computer. As soon as it’s ready, you open a file containing a document and start editing it using a word processor.
If you take a snapshot of your system at that point, what will the storage devices contain?
All the documents saved on your computer
All the programs installed on your computer
All the data for the document that you are editing
All the instructions contained in the word processing program
All the instructions contained in the operating system
What is the main task of a general-purpose computing system?
The main task is to execute programs.
There is no main task. It can perform any task prescribed by a program.
The main task depends on the system. Different systems may perform a different main task.
The main task depends on the user. Different users may need the system to perform a different main task.
Which of the following are logical operators?
+ (addition)
and (conjunction)
or (disjunction)
> (comparison: greater than)
mod (remainder)
What sort of values can a logical statement have?
Any number
Any sentence that makes sense
Either true or false
Either ‘yes’, ‘no’, or ‘don’t know’
A laptop computer has a ‘Battery low’ indicator that starts flashing red when the battery power falls below 20%, but only if the laptop is not charging.
Which of the expressions below capture the behaviour of the ‘Battery low’ indicator?
Battery below 20% < Charging
Battery below 20% not Charging
Battery below 20% or Charging
Battery below 20% and not Charging
Battery below 20% only if not Charging
Complex components like the processor and the main memory can be created out of simple logic gates.
True
False
Artificial intelligence is about creating machines that are more intelligent than humans.
True
False
Creating a machine that can walk is not artificial intelligence because humans walk without thinking.
True
False
With machine learning, machines are trained how to perform tasks by showing them examples or providing feedback.
True
False
Machine learning does not involve programming.
True
False
The performance of machines that are trained to perform a task is only as good as the examples that have been used to train them.
True
False
