Friday, August 7, 2009

chapter 6

storage...it means to holds data, instructions, and information for future use..storage medium is physical material used for storage and also called secondary storage..

at first. i learn about the description of characteristics of magnetic disks.it is about hard disks. hard disk is high-capacity storage that consists several inflexible, circular platters that store items electronically.then, i learn what is online storage, floppy disk, and zip disk.

after that, i learn about optical discs, tape, PC cards, miniature mobile storage media, microfilm and microfiche.

now, i can identify the description of characteristics of those discs and recognise the uses of each of it.

Thursday, August 6, 2009

chapter 5

this chapter is about input and output..input is data or instructions entered into the memory of computer..input device is any hardware component used to enter data or instructions into a computer..the device is such as keyboard, mouse, trackball, touch pad, control pad, game pad, light pen, touch scree, stylus and many more. beside that, there are also have other input device such as voice input, audio input, digital camera, web cam, scanner, turnaround document, optical reader, and others..

then, output is data that has been processed into a useful form, called information. example of output device are monitor, printer, audio output device such as speakers, earphones, and earbuds, voice output such as internet telephony, fax machine, data projector and many more.

at the end of lesson, i get information about input and output so much. now i can differentiate between what is output device and input device..

chapter 4

the components of the systems unit..system unit is the case that contains electronic component of the computer used to process data.in this chapter, i learn about components of the system unit.the common components inside the system unit are processor, memory, adapter cards, ports, drive bays and power supply.then, i learn about how memory stores data, instructions, and information.a also get some information about sequence of operations that occur when a computer executes as instructions.not to forget, the comparison of various personal computer processors on the market today.and the last subtopic is how to clean a system unit..now, a have more information about system unit that is a very important components of a computer.

chapter 3

this chapter is about application software..application software for users is a programs designed to make users more productive..for computer, it is a programs that control the operations of the computer.example of common application software are dialog box and window.i also learn about business software...it is a software that assists people in becoming more effective and efficient.word processing software is to allows users to create and manipulate text and graphics..it also about the application that we always use such as font, spreadsheet software, the function of using business software, charting, database software, presentation graphics software, note taking software and many more...beside that, i also learn about graphics and multimedia software..atre that, i learn about popular utility programs..the last subtopics in this chapter is learning aids and support tools for application software...in the end of the chapter, i got some information about different type of software in computers and what it is..i hope that i can use this application in the future to help me doing my works..