~ Information Processing Cycle ~Input:
Users input data or instruction to be process. Input could be either text, graphic, audio or video. Input devices are used to input data & they are any electronic device connected to a computer and produces input signals.
Process
Data or instruction being input is then processed by the CPU which controls all activities within the system. The processed data are then sent to an output device as usable data.
A CPU interprets the and carries out the instructions by processing data and controlling the rest of the computer’s components.
A CPU consists of the Control Unit (CU) & the Arithmetic Logic Unit (ALU). CU’s main function is to direct the CPU to process data by extracting instructions from memory, decodes & then executes them. The CU manages a four-step basic operation which is called a machine cycle. The steps are Fetching, Decoding, Executing & Storing.
Storage:
Computer storage stores programs and data to be used at a later time. It also keeps current data while being processed until the information is saved in a storage media (hard disk or diskette). Computer storage also stores instructions from a computer program. There are two type of computer storage; primary storage and secondary storage.
Primary storage is known as the main memory of a computer, including RAM (Random-Access Memory) and ROM (Read-Only Memory). It is an internal memory (inside the CPU) that can be accessed directly by the processor.
Secondary storage is an external storage that refers to various ways a computer can store program and data. Many complex functions, such as translators for high-level languages and operating systems are placed in primary storage. Secondary storage is an alternative storage. It is very useful to store programs and data for future use.
Output:
Output is the result of data processing activity when it is presented external to the system. The output from a computer can be in a form for use for example printed or displayed. There are four types of output, which are texts, graphics, audio and video.
Users input data or instruction to be process. Input could be either text, graphic, audio or video. Input devices are used to input data & they are any electronic device connected to a computer and produces input signals.
Process
Data or instruction being input is then processed by the CPU which controls all activities within the system. The processed data are then sent to an output device as usable data.
A CPU interprets the and carries out the instructions by processing data and controlling the rest of the computer’s components.
A CPU consists of the Control Unit (CU) & the Arithmetic Logic Unit (ALU). CU’s main function is to direct the CPU to process data by extracting instructions from memory, decodes & then executes them. The CU manages a four-step basic operation which is called a machine cycle. The steps are Fetching, Decoding, Executing & Storing.
Storage:
Computer storage stores programs and data to be used at a later time. It also keeps current data while being processed until the information is saved in a storage media (hard disk or diskette). Computer storage also stores instructions from a computer program. There are two type of computer storage; primary storage and secondary storage.
Primary storage is known as the main memory of a computer, including RAM (Random-Access Memory) and ROM (Read-Only Memory). It is an internal memory (inside the CPU) that can be accessed directly by the processor.
Secondary storage is an external storage that refers to various ways a computer can store program and data. Many complex functions, such as translators for high-level languages and operating systems are placed in primary storage. Secondary storage is an alternative storage. It is very useful to store programs and data for future use.
Output:
Output is the result of data processing activity when it is presented external to the system. The output from a computer can be in a form for use for example printed or displayed. There are four types of output, which are texts, graphics, audio and video.
No comments:
Post a Comment