Hardware Components
Define Web camera
Allows internet users to view streaming images or video of other internet users in different locations. E.g. Skype, Viber and Facetime
Connected using USB cord.
Explain the function of a digital camera
takes pictures and videos, can also be transferred to a computer using a USB cord
What are the 5 hardware categories/Types?
Input, Output, Processing, Storage, Communication
RAM stands for Random Access Memory, it temporarily holds data, and stores what the CPU is currently working on.
Differentiate between warm start and cold start
Warm start is when the computer is already on but needed to restart due to some technical issues, while cold start is when you turn on the computer from the power switch and making sure to switch on the power button
Which component is responsible for controlling program instructions
CPU
Describe the function of a Multifunction device
Microphone and Scanner are both examples of which hardware type?
Input
Give 2 difference between RAM and ROM
RAM is volatile, ROM is non-volatile
RAM is temporary and ROM is Permanent storage
RAM stores what the CPU is currently working on, ROM is unchangeable and can only read memory but does not change anything.
Explain Binary System
IT is the language the computer understands and a system that contains only 2 values, which is 0 and 1
This component is responsible for converting sound waves into electronic signals allowing the computer to send through an output device, such as speakers
Microphone
Mouse, Joystick and touchscreen are all examples of what kind of device?
Pointing devices
Explain Communication devices
Allow one computer to talk to another computer or the internet.
What are the 3 physical types of memory?
Transistor, Magnetic, Optical
What is the purpose of ASCII? and what does it stand for?
ASCII is the code that translate our keyboard characters into binary code for the computer. This code is called ASCII, which stands for American Standard Code for Information Interchange.
Explain Projector
A device that uses rays of light to portray slides or film through a glass lens.
Sione booked a ticket online and wanted a hardcopy of his ticket, which device or component would he use?
Printer
Video Camera and Digital Camera belongs to which hardware type?
Both input and output
Define Primary memory and give an example
Primary memory is computer memory that is accessed directly by the CPU. Primary memory consists of RAM and ROM.
Define BIT and BYTE
BIT is the smallest unit of storage.
BYTE is a group of binary digits or bits (usually eight) operated on as a unit.
1 Byte equals One character eg, A,B, $, &, "
Define Motherboard
Hold and link all components of the computer and allows input and output devices to communicate to each other. It is the main circuit board in the system unit.
Differentiate between external hardware and internal hardware
Internal hardware are parts of the computer that are inside the system unit or protective case.
External hardware are optional parts of the computer that are connected to the system unit. Also known as peripheral devices.
True or False: System Unit and Power supply both belongs to input and output device
False, it is neither
Magnetic memory uses read and write head to read and write data to its media
Optical uses laser eye to read and write data to its media
Transistor uses electricity to store data.
Draw the data flow diagram of how the data flows throughout the whole computer system
Output devices
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Secondary .........Main Memory ........CPU
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Input devices