2803680
Description
Mind Map by marialaura291, updated more than 1 year ago
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Created by marialaura291
over 9 years ago
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ICT
- is an abbreviation for...Information and Communication Technology The subject of ICT encompasses
any technology that allows us to process data and to communicate.
- data is simply any numbers, letters or symbols that can be entered into a computer system.
examples: A, 20, DOG, 3.1415927, ABC123, +++
- the values represent the ISBNs of books, the values now have a context. With context, they
have meaning - they are now information.
- Any data or instructions that are to be processed by the CPU must be placed into main memory
- RAM is a volatile storage device. This means that if the computer’s power is turned off the contents
of RAM disappear and are lost.
- When a computer is in use, its RAM will contain… 1. The operating system software 2. The
application software currently being used 3. Any data that is being processed
- When a computer is in use, its RAM will contain… 1. The operating system software 2. The
application software currently being used 3. Any data that is being processed
- RAM is a volatile storage device. This means that if the computer’s power is turned off the contents
of RAM disappear and are lost.
- the values represent the ISBNs of books, the values now have a context. With context, they
have meaning - they are now information.
- data is simply any numbers, letters or symbols that can be entered into a computer system.
examples: A, 20, DOG, 3.1415927, ABC123, +++
- a system has 3 stages
- 1. Something feeds into the system (the input) 2. The system does something with the input (the
process) 3. The process gives a result (the output)
- 1. Something feeds into the system (the input) 2. The system does something with the input (the
process) 3. The process gives a result (the output)
- a computer is a device that stores and processes information according to a set of
instructions.
- A computer is an information processing system
- the hardware is the physical parts of the computer system – the parts that you can touch and see.
- Software is a collection of instructions that can be ‘run’ on a computer. These instructions tell the
computer what to do. Software is not a physical thing
- Central Processing Unit (CPU) The CPU is the 'brain' of the computer. It is the device that carries out
software instructions
- An operating system is a special piece of software that manages the general operation of a
computer system:
- Central Processing Unit (CPU) The CPU is the 'brain' of the computer. It is the device that carries out
software instructions
- the hardware of a computer is a fairly useless lump of plastic and metal!
- Software is a collection of instructions that can be ‘run’ on a computer. These instructions tell the
computer what to do. Software is not a physical thing
- the hardware is the physical parts of the computer system – the parts that you can touch and see.
- For a computer system to be useful it has to consist of both hardware and software.
- Operating systems that you may have heard of: • Windows XP • Windows Vista • Mac OS X • Linux The
system that people use to interact with a computer (to give it commands, to see the results of those
commands, etc.) is known as the user interface.
- The system that people use to interact with a computer (to give it commands, to see the results of
those commands, etc.) is known as the user interface. There are two that you need to be aware of:
• Graphical User Interface (GUI) • Command-Line Interface (CLI)
- A GUI is an interface built around visual (graphical) things
- GUIs are quite easy to use due to the visual nature of the interface
- A GUI is an interface built around visual (graphical) things
- The system that people use to interact with a computer (to give it commands, to see the results of
those commands, etc.) is known as the user interface. There are two that you need to be aware of:
• Graphical User Interface (GUI) • Command-Line Interface (CLI)
- A mainframe computer is a large computer, often used by large businesses, in government offices,
or by universities.
- Laptop Computer A 'laptop' computer is a light, compact and portable PC. Laptops contain a
rechargeable battery
- A palmtop computer is similar to a laptop computer, but smaller. It'ssmall enough to fit in the palm
of your hand there is no room for a trackpad, so a touchscreen or tiny joystick is used instead.
- A PDA is similar to a palmtop computer, except it is even morecompact, and
typically has no keyboard, using a touchscreen for all data input
- Laptop Computer A 'laptop' computer is a light, compact and portable PC. Laptops contain a
rechargeable battery
- Operating systems that you may have heard of: • Windows XP • Windows Vista • Mac OS X • Linux The
system that people use to interact with a computer (to give it commands, to see the results of those
commands, etc.) is known as the user interface.
- A computer is an information processing system
- a system has 3 stages
- The general name the extra devices is ‘peripheral devices’. They are usually categorised into
input devices, output devices andstorage devices.
- What Are Input Devices? Devices that pass data into the computer are known as input devices. A
keyboard, a mouse and a webcam are all examples of input devices.
- What Are Output Devices? Devices that take data from the computer are known as output devices. A
monitor, a printer and a loudspeaker are all examples of output devices.
- Secondary storage (sometimes called backing storage) is the name for all of the devices
- A hard drive, a CD-ROM, a floppy disc and a USB memory stick are all examples of secondary storage
devices. Secondary storage is non-volatile
- A hard drive, a CD-ROM, a floppy disc and a USB memory stick are all examples of secondary storage
devices. Secondary storage is non-volatile
- What Are Input Devices? Devices that pass data into the computer are known as input devices. A
keyboard, a mouse and a webcam are all examples of input devices.
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