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Terms in this set (51)
the software you use to provide a solution to an ICT problem
errors made when typing data in using a document as a source of the data e.g. keying in data someone is saying.
checks that the data being typed in matches exactly the data on the document used to supply the information.
the process which ensures the data accepted for processing is sensible and reasonable.
checks that a developer of a solution creates using the software, in order to restrict the data that a user can enter, so as to reduce errors.
data validation technique which checks that the data input to a computer is within a certain range.
Ensure that codes conform to the correct combinations of characters.
Data Type Checks
checks if the data being entered is the same type as the data type specified for the field.
an operation that transfers data into information.
the act of entering data into an ICT system.
the hardware device such as a keyboard or scanner used to feed the input data into an ICT system. The device will encode the data into a form the computer can understand such as binary.
the material on which the data is stored prior to being entered into the computer system, such as a lottery ticket.
the raw facts and figures that we enter into a computer e.g. text, sound, image.
OCR (Optical Character Recognition)
Converts scanned text to a word processed file by light sensing methods.
OMR (Optical Mark Reader)
Recognises position of marks on documents such as a lottery ticket.
MICR (Magnetic Ink Character Recognition)
Characters are written in magnetic ink and the MIC reader recognises the number printed in a standard front, usually on cheques.
memory which loses data when the power is turned off.
memory stored on a chip which does not lose data when the power is turned
RAM (Random Access Memory)
Fast volatile primary storage which holds files/programs that are 'active'.
ROM (Read Only Memory)
Non-volatile primary storage that holds 'start-up' instructions stored in BIOS (Basic Input Output System)
Memory storage in chips inside the computer, that is essential for the computer that consists of RAM and ROM.
Backing storage outside the computer, which is made up of most storage devices such as USB memory stick, cloud storage and SD card.
the applied science of equipment design, as for the workplace, intended to maximise productivity by reducing operator fatigue and discomfort.
RSI (Repetitive Strain Injury)
Where over a long period of time, repeated movements result in damage to mainly fingers and wrists.
a piece of hardware that is used to display or output information.
GUI (Graphical User Interface )
allows users to communicate with the computer using icons, pull-down menus and pointers.
Software that controls the hardware of a computer and is used to run the applications software. It controls the handling of inputs, outputs, interrupts etc.
the programs which run on the computer giving the hardware instructions on what to do.
any computer software that manages and controls the hardware thus allowing the applications software to do a useful job.
software which helps the user perform tasks such as virus checking, file compression.
Software used for a particular purpose or application such as word-processing, presentation, image editing.
the physical components of a computer - both internal and external.
the person who needs the solution to an ICT problem which they have identified
a person who makes active use of an ICT solution to solve an ICT problem, which means that they input data and produce outputs.
Only view the outputs such as a client only being able to see the invoice they receive, and they cannot input data or change content.
breaking a problem down so that it is easier to understand and solve, and involves understanding the inputs, processes and outputs.
data that is ridiculous or totally unsuitable that should be rejected.
test data entered that should be accepted by the ICT solution for processing.
test data entered which is at either side of the limits imposed by a range check and the numbers of the range themselves.
Data entered into an ICT solution to check to check that it works properly.
the approach that will be used to test the whole solution and consists of tests including: validity of data input; accuracy of output; presentation of information; and usability of the system.
the act of reviewing whether the solution has met client requirements, if the solution work properly, if the solution is effective and how could you further improve the system.
Double Entry of Data
Two people use the same data source to enter details into the ICT system and only if the two sets of data are identical, will they be accepted for processing.
A printer that works by spraying ink through nozzles onto the paper.
A printer which uses a laser beam to form characters on the paper.
media such as magnetic tape and hard drives where the data is stored as a magnetic pattern.
Carefully reading what has been typed in and comparing it with what is on the data source for any errors, which can then be corrected.
Storage devices which use lasers to store and read data. Examples include CDs and DVDs.
Platter (Hard Disk Drive)
The circular metallic disk where one or both sides of magnetized, allowing data to be stored on a hard disk drive.
Head (Hard Disk Drive)
The head reads the magnetic data from the platter.
Actuator Arm (Hard Disk Drive)
Used to move the read heads in and out of the disk, so that data can be read and written to particular locations.
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