Thursday, 3 May 2012

it's all 'bout ict




OBJECTIVES OF ICT

The objectives are:
  1. To lead, manage and develop ICT in the University
  2. To provide excellent customer centred services, that are responsive to the changing needs of the user
  3. To maintain an effective staff development programme to ensure that ICT staff continue to develop the necessary skills to provide high-quality services and support
  4. To actively contribute to the University Sustainability agenda
  5. To contribute to the University’s Change agenda by promoting the effective use of ICT and leading a number of reviews of business processes within the organisation

WHAT IS COMPUTER SYSTEM ???

A system of interconnected computers that share a central storage system and various peripheral devices such as a printers, scanners, or routers. Each computer connected to the system can operate independently, but has the ability to communicate with other external devices and computers.


WHAT IS INPUT ???

A component or peripheral device (such as a barcode reader, graphic tablet, keyboard, magnetic-stripe reader, modem, mouse, scanner, or stylus) that feeds data or instruction into a computer for display, processing, storage, or outputting or transmission.
Input devices convert the user's actions and analog data (sound, graphics, pictures) into digital electronic signals that can be processed by a computer. Digital data (such as from barcode readers, modems, scanners, etc.) does not require any conversion and is input direct into a computer. It is through input devices that a user exercises control over a computer, its operations, and outputs.




WHAT IS PROCESS ???

In computing, a process is an instance of a computer program that is being executed. It contains the program code and its current activity. Depending on the operating system (OS), a process may be made up of multiple threads of execution that execute instructions concurrently.


WHAT IS PROCESSOR ??? 

The central processing unit (CPU) is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input/output operations of the system. The CPU plays a role somewhat analogous to the brain in the computer. 








WHAT IS STORAGE ???


Computer data storage, often called storage or memory, refers to computer components and recording media that retain digital data. Data storage is a core function and fundamental component of computers.
In contemporary usage, 'memory' usually refers to semiconductor storage read-write random-access memory, typically DRAM (Dynamic-RAM). Memory can refer to other forms of fast but temporary storage. Storage refers to storage devices and their media not directly accessible by the CPU, (secondary or tertiary storage), typically hard disk drives, optical disc drives, and other devices slower than RAM but are non-volatile (retaining contents when powered down).Historically, memory has been called core, main memory, real storage or internal memory while storage devices have been referred to as secondary storage, external memory or auxiliary/peripheral storage.







WHAT IS OUTPUT ???

A result produced by a computer that is internal to the system (from one program or process to another) or external to it (from a program or process to an output device) but internal to an output device (modem, monitor, printer, etc.).













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