Data Processing SSS1 Second Term

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TYPES OF DATA Qualitative data: is descriptive information (it describes something). Quantitative data: is numerical information.CLASSIFICATION OF QUANTITATIVE DATA Continuous data Discrete data
DEFINITIONInformation processing is the acquisition, recording, organization, retrieval, and dissemination of information.It refers to the manipulation of digitized information by computers and other digital electronic equipment known as Information Technology (IT).Information processing systems include business software, operating systems, computers, networks and mainframes. A computer information processor processes information to produce understandable results.
Information is an important tool for decision-making in any organization. The type of information gotten and the method or mode of disseminating this information will determine the effectiveness and productivity of any organization or individual. Therefore information transmission is the process of sending and receiving information from one place to another at a particular point in time. It is the transfer of information from one source to a destination through communication media or gadgets.
In 1894, the young Italian inventor Guglielmo Marconi began working on the idea of building a commercial wireless telegraphy system based on the use of Hertzian waves (radio waves).By August 1895, Marconi was field testing his system but even with improvements, he was only able to transmit signals up to a one-half mile.In 1897, he established a radio station on the Isle of Wight, England.
Types of Information Transmission, namely: Satellite Wireless CableSATELLITE: In satellite communication, signal transferring between the sender and receiver is done with the help of a satellite. In this process, the signal which is a beam of modulated microwaves is sent towards the satellite. Then the satellite amplifies the signal and sent it back to the receiver’s antenna present on the earth's surface. All the signal transferring is happening in the space. Thus, this type of communication is known as SPACE COMMUNICATION.
Ethics are a set of moral principles that govern the behaviour of a group or an individual.Therefore, computer ethics is a set of moral principles that regulate the use of computers. Some common issues of computer ethics include intellectual property rights (such as copyrighted electronic content); piracy concerns, and how computers affect society. For instance, while it is easy to duplicate copyrighted Content, computer ethics would suggest that it is wrong to do so without the author’s approval. It may be possible to access someone’s personal information on a computer system; computer ethics would advise that such an action is unethical.
A computer lab is a place where students learn practical uses of a computer, such as programming, how to use a spreadsheet program etc. There are safety rules that need to be applied in a computer lab that protect students and the computers themselves.
An operating system, or “OS”, is software that communicates with the hardware and allows other programs to run. An operating system is software that manages the computer hardware and provides common services for the execution of various applications software operating system acts as an intermediary between application programs and the computer hardware. An operating system is a program that after being loaded into the computer by a boot program, manages all the other programs in a computer.
Common examples of operating system Ms Windows (Microsoft Windows): It is a single-user GUI operating system. That is, only one person can use the
The operating system performs the following functions: Storage Management: The operating system also controls all storage operations. This means how the data or files will be stored on the computers and how the file will be accessed by the users etc. Creation of files, Directories. Basically, the operating system performs the following : It allows the creation of files and directories. It allows the reading of data from and writing of data to files and directories.

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