WHAT IS COMPUTER?

computerIs an electronic device, operating under the control of instructions stored in it’s own memory unit that can accept data, process data mathematically or logically and produced meaningful results called information.

Describe the following pictures?

What is Data?

Data – are raw facts or figures. They are made up letters, numbers and other symbols or special characters.

can be list of phone numbers

list of students names a set of keywords jotted during a speech

Information

refers to data that have been processed into a form that is meaningful and useful.

Data Processing

– is the manipulation and transformation of data into meaningful results.

Examples of the operations used in data processing include the following:

Gathering Data Interpretation and classification

of data Recording of Data Performing basic mathematical

operations Summarizing the results

Data processing is a routinely activity of all people. It’s what we do to gain and develop new knowledge. It is actually a cycle. As you read you will understand why.

television books

Newspaperradio

 TYPES OF DATA PROCESSING

Manual Data Processing Manual – mechanical data

processing Electronic data processing

Manual Data Processing

– is characterized by the absence of any machine in processing data.

The person involved does all the activities – from accumulation of data, their manipulation and the creation of results

Manual

mechanical data processing- devices are used

In processing but human intervention is needed to produce results.

Electronic data processing

– refers to the use of computer in processing data.