apex vs ict

Saturday, 16 April 2011

CONTENTS

what is computer system?
what is input and input devices?
what is process and processor?
what is storage and storage devices?
what is output and output devices?
conclusion.
references.

OBJECTIVE

this blog was created as a task given by ICT teacher to ICT lesson.besides, i would like to share what i've learned in ICT to other people especially student in my school.i hope, my blog will be able to increase others student knowledge about ICT.

WHAT IS COMPUTER SYSTEM??.

A computer system is defined as combination of components designed to process data and store files.A computer system consists of four major hardware componenets; input devices; output devices, processor and storage devices.A computer system requires hardware, software and a user to fully function.software refers to set of instructions that tell the hardware what to do. software can also have various other functions such as performing computation, communication with other software and human interaction.

Saturday, 9 April 2011

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WHAT IS THE OUTPUT AND OUTPUT DEVICES??.

output is..

Output is data that has been processed into a useful form, called information. There are four types of output, which are texts, graphics, audio and video.
the text consists of characters that are used to create texts, sentences and paragraphs.
graphics are digital representations of non text information such as drawing, charts and photographs.
audio is music, speech or any other sound. video consists of images that provide the appearance of full motion.

-output devices is...

Output is the result of raw input data that has been processed by the central processine unit into meaningful information. Common forms of output are texts, numbers, graphics, sound, animations and videos. The most common output devices are computer screens, speakers and printers..

pictures of output devices.

- what is storage and storage devices
-storage is...

Storage is a located which data,instruction and information are held for future use.Every computer uses storage to hold system software and application software.

-storage devices is..

Storage devices is hardware device capable of storing information.Two general types of storage devices exist (internal and external). An internal storage device is implanted inside of your computer. An external storage device can be held in the palm of your hand and carried anywhere you go.

pictures of storage devices.

what is the process and processor??.

-process is..
The processing unit controls all activities within the system. For every instruction, the control unit repeats a set of four basic operatons called machine cyle:

-fetching
the process of obtaining a program instructions or data item from memory.

-Decoding
the process of transalating a program instruction into signals that the computer can execute.

-Executing
the process of implementing the instructions in a program.

-storing
the process of writing the result t the storage or memory.

-processors is..

Microchip implanted in a CPU's hard drive that processes instructions sent to it by the computer and software programs. Processors come in a number of sizes and are manufactured by such corporations as Intel and Advanced Micro Devices. The greater the gigahertz capacity of the processor, the quicker the computer will be able to process instructions sent to it. Some corporations have developed a dual processor, which allows one processor to process multiple instructions at the same time without slowing down performance.

pictures of processors.

what is input and input devices??.

-input is...

Input is any data or instruction that we enter into the computer for processing.there are some common ways of feeding input data into the system, which are,
-typing on keyboard
-pointing with a mouse
CPU accepts instruction from the user and translates the instruction into readable information(decode)

-input devices is...

When data is entered into the computer system, it is called an input. Input comes in various forms; texts, graphics, audio and video. Input devices are needed to input data into the computer system.