Chapter 1-system Tecnologies and Implications Flashcards
Cable Locks
A locking mechanism that can be used to change a computer to a stable object like a desk or a bracket
Clients
Computers Connected to a network that use services and resources from the server
Computer power
Refers to the Oval ability of the computer and generally describes a combination of different factors such as the speed and performance of the CPU, the amount of the storage and size of the memory
Dedicated device
Devices that are designed to perform just one specific tasks, such as a automatic teller machine, GPS devices and household appliances like a microwave oven and washing machine
General purpose computer
Computers that allow us to load programs ,software, which in turn allows these computers to perform a wide variety of tasks
ICT
Information and communication technology – a system or two that helps us to retrieve, store, process and Communicate digital information.
Information processing cycle
A four-stage cycle (inputs processing storage and output) which all computers follow due process data into information.
Laptops
Computers that use miniaturized parts that have a low power consumption so as to allow for portability that can operate on batteries. They all have cases with a hinged screen that folds up for easy portability and include a keyboard and some suitable pointing device such as a touchpad.
Power schemes
A series of settings offered by an operating system, allows the user to control how the computer manages its power.
Server
A powerful computer used to provide resources and services to all the computers that are linked together in a network
UPS
Into wrapped to go power supply – a hardware device used to protect their computer games power surges and spot (which can damage electronic equipment) as well as power outages.
Aspect Ratio
The ratio of with two hearts of a screen
Bluetooth
A wireless (radio) technology that allows the fastest close to each other to communicate
Braille
A form of text used by blind people. It consists of a code of bumps printed on a surface, which can be read by feeling them with your fingers.
Contrast ratio
Difference Between the darkest black and the brightest white that a display device can produce. More is better.
DPI
That’s per inch – typically used to refer to print quality, but also used to refer to screen resolution.
Driver
Software used to control a specific hardware device.
Interactive whiteboard
V what board connected to computer that acts mate very large touchscreen.
LCD
Liquid-crystal display – the most common technology in TVs and computer displays
Lumen
A unit for measuring light output- typically used to describe the brightness of the image of a data projector
Pixel
Small dog like elements that make up an image
Plug and play
A set of rules about how a peripheral communicates with the computer when connected to it
Response time
How quickly a display can respond to a command to completely change a pixel open brackets measured from white to black to white again). Anything above 10 ms creates ghosted images when fast action is displayed.
Touch screen
Hey screen which is also sensitive to touch or pressure and allows you to interact directly with the elements displayed on the screen but touching them.
Track ball
I large balls that can’t be moved by hand to change the position of the pointer on the screen
WiFi
Networking technology is that use radio signals and so does not need wires
Boot
The term used to describe a computer start-up process. Restarting your computer is also called rebooting it
Central processing unit (CPU)
Hardware components that perform all calculations and executes instructions.
Core
Single physical processor. Chips that are duel core have two processes quad core have four processes etc
DIMM
Dual inline memory module– a standard a stick of ram designed to fit into a DIMM slots on the motherboard
Defragmentation
The process of using defragmentation utility program to reserve the process of fragmentation. The fragmented utility program will rearrange and consolidate the scattered parts of files on desk so that they can be retrieved more quickly.
Disk scanner
Are utility program which usually comes with the operating system that is used to stand on a disk 46 and corrupted files and tries to fix sam are utility program which usually comes with the operating system that is used to stand on a disk for defects and corrupted files and tries to fix them
Fragmentation
A process that occurs over a period of time as files are saved, changed or deleted from my desk. The different parts of the files can become scattered across the desk, causing the computer to become slower in retrieving the files in order to open or save them.
Formatting
Oh process of preparing a disk so that data can be saved to it and read from it
GHz
Hurts – the unit in which the speed of the CPU is measured higher is better
Memory
Temporary storage area for programs and data being processed in the computer
Motherboard
Large circuit board inside the computer box, containing slots and connections for all the components of the computer.
Online storage
Search space on a storage medium connected to the server and access over the Internet. Accessible where is the you can log into the server
RAM
Random access memory – where any running program and it starter is temporarily
ROM
Read only memory – a special chip on the motherboard that holds the instructions needed to start the computer when you switch it on
Storage
Place with the computer keeps the data and program that it has been working with – even when the power is switched off.
Authoring software
Tools used to create multimedia products.
