SS1 First Term Data Processing Lesson Note – Digitalization of Data

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WEEK 2

TOPIC:  DIGITALIZATION OF DATA

CONTENT: 

1. Definition of digitalization of data
2. History of Computer Development

SUBTOPIC 1: Definition of digitalization of data

Digitalization is the process of converting information into a digital format. In this format, information is organized into discrete units of data (called bit s) that can be separately addressed (usually in multiple-bit groups called byte s).

Digitalization of data is a means or process of converting physical or written records such as text, images, video and audio into digital form. Digitalization of data gives room for accessing, preservation and sharing of information.

Digitalized data offers the following benefits: Long term preservation of documents, orderly archiving of documents, easy & customized access to information, easy information dissemination through images & text, CD-ROMs, internet, intranets, and extranets.

History of Computer Development

ABACUS: Abacus is an instrument used in performing arithmetic calculations. It is probably the first calculating device. The Chinese invented it, and because of its success it spread from China to other countries. The abacus is also called a counting frame, it consists of a tablet or frame bearing parallel wires or grooves on which counters or beads are moved. A modern abacus consists of wooden frame with beads on parallel wires, and a crossbar oriented perpendicular to the wires that divides the beads into two groups. Each column or wire represents one place in the decimal system. The Abacus was used for addition and subtraction. It could not carry out complex mathematics operation.

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