Computer system input

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INPUT

1.1 Read and translate the following words and word-combinations.

An information system, deactivate processing, encode data, digital code, transform data into digital code, an information-processing cycle, a finger touch, a machine-readable code, an encoded piece of data, source documents, a separate transcribing step, input technology, error-prone transcribing, computer processing, the point of origin, a specially encoded price tag, a human error, time-consuming, a special reading device.

activate (v) – активувати; викликати

capture data – збирати дані

eliminate(v) – вилучати

encode data – закодувати данні

enter data – вводити дані

error prone – схильний до помилок

finger touch – дотик пальця

information processing – опрацювання інформації

machine-readable code – машинний код

memory location – комірка пам’яті

on-line processing - оперативне опрацювання

scan(v) – сканувати

source document – початковий документ

switch(v) – перемикати

transcribed input – закодоване введення

transform data into digital code – перетворити дані у цифровий код

trigger (n) – тригер; запускати

Generally, an information system is acti­vated by the input of data or information. Input can also deactivate processing. Thus, the primary role of input is to activate or deactivate infor­mation processing.

Input is a process that involves the use of a device to encode or transform data into digital codes that the computer can process. For example, if you press the letter A on the keyboard of a terminal or personal computer, you activate an information-processing cycle. The key is simply a switch that senses a finger touch and triggers a cycle to accomplish the following: (1) the keystroke is encoded, or converted into a machine-readable code, (2) the encoded piece of data is stored in a memory location for later processing, and (3) output is provided by displaying the letter Aon the computer’s monitor screen.

Input can be classified into two broad categories: (1) transcribed input—data that are captured by tran­scribing from source documents onto another medium that is capable of being input to a computer system and (2) di­rect source input—data that are cap­tured directly from their source without a separate transcribing step. Advances in input technology are moving the process of input away from transcription toward the capturing of data directly from their source.

There are two major drawbacks to transcribed input. The first is that the process is time consuming. The second is that the process is error prone. Human error is the single biggest cause of mistakes in data input.

Time-consuming and error-prone tran­scribing can be bypassed by entering data directly from their source with a special reading de­vice known as ascanner. This saves time by eliminating the step of pressing keys, and it is also a more accu­rate way of entering data.

1.4 Find synonyms.

Encode, convert, drawback, means, transform, capture, fulfil, enter, advance, gather, breakthrough, common, main, general, include, disadvantage, collect, primary, accomplish, involve, major, medium

Дата добавления: 2015-01-03