英语四级考试阅读主旨题解题技巧介绍
The computer is an electronic machine. It is a machine that solves problems as much as you do. As an example, let s trace the way you would add two numbers. Then, let s see how a computer would do it.
Step1. You collect information. That is, you either see or hear the numbers to be added.
Step2. You find a method to solve the problem. In this case, you remember how to do addition.
Step 3 You bring together the information , and the method
Step 4 You perform the operation, adding the two numbers.
Step5 You report the results of your work, either by writing down the answer or by saying it aloud.
All computers go through five similar steps.
Step 1 The computer receives information, or data, from the outside. It changes the data into electric language, called input.
Step 2 The computer has been given a program contain instructions for solving the problem. The instructions ate found in the storage or memory.
Step 3 The computer bring together the data from the input and the instructions from the storage. This is done by the computer s control.
Step 4 The computer goes through the steps of the instructions on the data; this is called processing.
Step 5 The computer changes the result from electric language to human language. It presents the results in print or sound, called output