Use of Facsimile (Fax) in Businesses

Facsimile (or FAX) has established itself as an effective means of rapid transmission of images such as pictures and drawings. Fax involves scanning of graphic information, converting it into signal waves and then taking these signals to the destination and produce a copy of the image at the destination. The signal waves are transmitted in any of the communication media Read More …

Types of Calculators

Several types of calculating machines 9’re available in the market. Let us discuss about some of them. Key-driven Calculator: It has a full-bank keyboard. When keys are pressed, the numbers are shown on the dial. Multiplications are made by repeated additions and similarly, divisions are made by repeated subtractions. For instance, to multiply 3 by 3 is pressed three times. Read More …