Judul : Applied English (For Informatics Engineering)Penulis : Dwi Megista Putri, M.Pd., Mona Afersa, M.PdSinopsis Buku :Computers are therefore used in almost every type of work and are found almost everywhere. Computer equipment is called hardware and computer programs and data are know as software. A variety of devices can be attached to computer. Input devices are used to enter data into the computer for processing. An input device called a magnetic character reader (MICR) is used to read characters printed using magnetic ink character are commonly found on bank cheques.An optical input device called a barcode reader uses the reflection of a light beam to read a sequence of printed parallel bars call a barcode. The bars are of different thickness and each sequence of bars represent a different number according to standard code. Barcode labels are used to code items. Each item can be identified by a computer, using a barcode reader to scan the labels. Barcodes are used in industry, shops and supermarkets for stock control and to allow a computer to look up the price of items being purchased.
