Computer Revision summary Chapter 5 Software What is software? It is a general name given to all the programs that can be tin on computer hardware. Operating systems (systems software) Is a program(s) that controls the hardware directly. Operating systems perform the following tasks: They provide a way for applications software to communicate with the hardware. They manage the system resources such as memory and also allocate CPU time. They manage the transfer of data to and from the various peripherals (keyboard, mice, scanners, printers, etc.) They manage systems security. Multitasking: Is the ability of a computer to run two or more programs at the same time. …(complete your notes here about multitasking) …………………………………………………………………... …………………………………………………………………………………………..…………………………………………………… …………………………………………………………………………………………..……………………………………………………… ………………………………………………………………………………………..………………………………………………………… ……………………………………………………………………………………..…………………………………………………… Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook. Computer Revision summary Multi-access: It is a system that allows several users to make apparently simultaneous use of the computer. …(complete your notes here about multi-access) …………………………………………………………………... …………………………………………………………………………………………..…………………………………………………… …………………………………………………………………………………………..……………………………………………………… ………………………………………………………………………………………..………………………………………………………… User interfaces: 1- Command driven 2- Menu driven 3- Graphical user interface Designing a user interface: Consistency Positioning the items on the screen Use of colour Use of sound Programming languages: Low level languages (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. o Machine language Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook. Computer Revision summary (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. o Assembly language (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. High level language (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. Translation programs: 1- Compilers (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. 2- Interpreters: (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. 3- Assemblers: (complete your notes here) ………………………………………………….…………………………… …………………………………………………………………………………………………………………………. SOLVE ALL END OF CHAPTER QUESTIONS Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook. Computer Revision summary Chapter 6 Collecting your data (pages 37 to 47) Form design: The need to design a form as a method used to collect data before inputting into the computer system. Main parts of a form: Headings Instructions Layout Sections Testing form design Coding data Why coding is required? 1- Codes are quicker to type in …………………………………………………..…………… (complete) 2- Using codes reduces the sizes of a file …………………………………………….. (complete) 3- Codes are often unique ………………………………………………………………………. (complete) Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook. Computer Revision summary Designing codes: Points when designing a coding system: 1- Codes should always be the same length. 2- Codes must be easy to use. 3- Codes must not be too short. Putting the details into the computer: Key to disk Alternative methods of data capture Magnetic ink character recognition MICR: (complete your notes here) ………………………………………………….…………………………………………………… ………………………………………………………………………………………………………………….………………………………… …………………………………………………………………………………………………………………………………………………… ………………………………………………..…………………………………………………………………………………………………. Optical mark reading OMR: (complete your notes here) ………………………………………………….…………………………………………………… ………………………………………………………………………………………………………………….………………………… ……………………………………………………………………………………………………………………………………………… ……………………………………………………………..……………………………………………………………………………… Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook. Computer Revision summary Barcode readers: (complete your notes here) ………………………………………………….…………………………………………………… ………………………………………………………………………………………………………………….………………………………… …………………………………………………………………………………………………………………………………………………… ………………………………………………..………………………………………………………………………………………………… Optical character recognition OCR: (complete your notes here) ………………………………………………….…………………………………………………… ………………………………………………………………………………………………………………….………………………………… …………………………………………………………………………………………………………………………………………………… ………………………………………………..………………………………..……………………………………………………………… Talking to your computer – speech recognition: (complete your notes here) ………………………………………………….…………………………………………………… ………………………………………………………………………………………………………………….………………………………… …………………………………………………………………………………………………………………………………………………… ………………………………………………..……………………………………………………………………………… Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook. Computer Revision summary Automatic data capture using signals: Not all data have to be entered using keyboard or special forms. Some data can be entered directly into the computer in the form of electronic signals. (complete your notes here) ………………………………………………….…………………………………………………… ………………………………………………………………………………………………………………….………………………………… …………………………………………………………………………………………………………………………………………………… ………………………………………………..………………………………………………………………………………………………… …………………………………………………………………………………………………………………………………………………… SOLVE ALL END OF CHAPTER QUESTIONS Please note, these are just important titles of ch5 & ch6. You still need to study your school textbook.
