5-1 Electronic Data Processing 5-2 Hardware 5-3 Software 5-4 People ware 5-5 Advantages of Electronic Data Processing 1. Speed 2. Accuracy 3. Automatic Operation 4. Decision Making Capabilities
5. Compact Storage 6. Discipline it Imposes 5-6 The Stored-Program Concept
5-1 Electronic Data Processing There are different types of data processing system and each performs one or more required operations on data by means of various devices. Automatic Data Processing (ADP) – when the machine performs most of the required operations. Electronic Data Processing (EDP) - when the machine is an electronic digital computer or simply as a computer system
Types of Data Processing System Automatic Data Processing Electronic Data Processing Hardware Software Peopleware
5-2 Hardware It refers to the physical equipment or components of an electronic data processing
5-3 Software Software commonly includes such programs as well as any operating aids that extend the capabilities of the computer. Stored programs tell the computer what steps to take , what data to work on and what to do with the results.
5-4 Peopleware It represents the personnel involved in system analysis, programming, computer operations, system maintenance, and the like. Systems analysis and design are the jobs of the systems analyst. Program development is the specialty of the programmer. System development is carried out by computer operators , input data preparation staff and output preparation clerks.
Advantages of Electronic Data Processing Speed
Computers operate on data at such phenomenal speeds that they can produce results which would simply not feasible otherwise.
The electronic circuitry of computers is such that, when the machines are programmed correctly and when incoming data is error free , the accuracy of the output is relatively assured.
Computers are considered 100% accurate.
Advantages of Electronic Data Processing 3. Automatic Operation
An electronic computer can carry out sequence of many data processing operations without human intervention
4. Decision Making Capability
A computer can perform certain decision instructions automatically.
Determine whether a certain statement is true or false.
Based on the result, choosing one or the other course of action out of alternatives included in the computer program.
Advantages of Electronic Data Processing 5. Compact Storage Electronic data processing systems have the ability to store large amounts of data in a compact and easily retrievable form 6. Discipline it imposes To solve a problem with a computer you must first understand the problem and second , program the computer to give you the right answer.
5-6 The Stored-Program Concept Before a computer can actually read data , process it and produce information , it must read set of instructions called program which actually indicates what processing is required . Programs, like data, are stored in the computer