This document provides an overview of computers and data processing. It discusses what a computer is, the basic components of a computer system including hardware like the CPU, input/output devices, and storage. It describes the three main stages of the data processing cycle: input, process, output. It also discusses different types of data processing like manual and electronic, and classifications of computers according to data handled, purpose, and size. The document is intended to help students in Grade 6 understand basic computer concepts and prepare for an upcoming test on the topic.
4. Saint AugustineThis is our coverage for our 1st periodical test, and also for our Quiz bee on Wednesday, on Thursday well have a quiz. Next week well have a Review, both HELE and Computer. Study hard!Prepared by: Ms. Requiso
6. computerIs an electronic device, operating under the control of instructions stored in its own memory unit that can accept data, process data mathematically or logically and produced meaningful results called information.
8. What is Data?Data are raw facts or figures. They are made up letters, numbers and other symbols or special characters.can be list of phone numberslist of students namesa set of keywords jotted during a speech
10. Data Processing is the manipulation and transformation of data into meaningful results.
11. Examples of the operations used in data processing include the following:Gathering DataInterpretation and classification of dataRecording of DataPerforming basic mathematical operationsSummarizing the results
12. Data processing is a routinely activity of all people. Its what we do to gain and develop new knowledge. It is actually a cycle. As you read you will understand why.
15. TYPES OF DATA PROCESSINGManual Data ProcessingManual mechanical data processingElectronic data processing
16. Manual Data Processing is characterized by the absence of any machine in processing data.The person involved does all the activities from accumulation of data, their manipulation and the creation of results
17. Manual mechanical data processing- devices are used In processing but human intervention is needed to produce results.
19. Why is a computer so powerful?It is fast In a computer, operations occur through the use of electronic circuits contained on a small chips.It is Reliable A human being can grow tired, a computer cannot.It is Accurate the computer calculates values and moves data within locations in the computer.
20. 4. It stores large amount of data storage capability is another reason why computer are so powerful.5. It has a numerous other capabilities can recall data stored in its memory; it is capable of remote processing and simulation and simultaneous processing; it can communicate with another computer.
21. What computers cannot do?It is dependent on program for a computer to perform the operations in the data processing cycle, it must be given a detailed set of instructions or steps that tell it exactly what to do.It cannot generate its own data the computer is reliant on the input of the user.It is prone to viruses The increase in number of computer viruses has already destroyed many programs in the past and has even affected the performance of some computer components and peripherals.
22. THE COMPUTER SYSTEM - HardwareRefers to the physical components of the computer system. It is the tangible part of the system which includes input, process, output and storage device.
23. Input devicesUsed to enter data into computer. These include keyboard, the mouse, joystick, scanners, and microphone.
24. is used to key In data into memory of the computer. It is used to type in commands of certain program.MouseIs a pointing device that is move around the computer screen to select a command. Keyboard
25. Joystickhelps you control the movement of people and objects in many computer games.ScannerWorks like a photocopy machine. It allows you to transfer pictures and photographs to your computer.MicrophoneCan capture sounds or voices for recording of effects.
27. Is the heart and brain of the computer. It contains the electronic circuits that actually cause the processing of data to occur. It directs the computer on where the data must be stored, what instruction to execute, how to perform requested operations, where to place the results.CPU
28. Output deviceAre used to give out processed data from the memory unit of the computer.Output unit devices are:1. Printer produce hard copy converts electronic or digital text and images into printed form.2. Monitor display the software being used and also the results obtained after data processing.3. VDU ( Visual Display Unit )4. CTR ( cathode ray tube )
41. 2. Scientific computerExpected to handle numerical data to a higher degree of accuracy3. General purpose computer = this kind of computer we use in school.
42. 4 classification according to sizeMicrocomputer a synonym for the more common term, Personal computer (PC)Minicomputer- functioned as a multi-user system for a several hundred users.Mainframe computers- used for such application of payroll computations, accounting business, transactions and engineering computationsSupercomputers- extremely powerful computer that performs at or near the currently highest operational rate for computers. Such as: weather forecasting, aircraft designs and nuclear energy.
43. Hint: Study the following wordsComputerDataData processingManual data processingElectronic data processingCycle of data processingComputer systemWhy is a computer so POWERFUL?What are computers cannot do?
44. HardwareSoftwareCPUInput devicesOutput devicesAuxiliary devicesSoftwareOperating systemClassification of computersClassification according to the type of data handleClassification according to purposeClassification according to size.