Monday, June 28, 2010

system software

The computer's master control program. When the computer is turned on, a small "boot program" loads the operating system. Although additional modules may be loaded as needed, the main part, known as the "kernel" resides in memory at all times.


The operating system (OS) sets the standards for all application programs that run in the computer. Applications "talk to" the operating system for all user interface and file management operations. Also called an "executive" or "supervisor," an operating system performs the following functions.


function of OS

1. Starting a computer . The process of starting a computer or restarting a computer is called booting .
2. Provide a user interface . We interact with software through its user interface . That is , user interface controls how you enter data and instuctions and how information is displayed on the screen . 
3. Managing programs . Some operating systems support a single user and only one running program at a time . Others support thousands of users running multiple programs .
4. Managing Memory .
The computer's operating system is responsible for managing memory such as : 
a ) Allocating data and instruction to an area of memory while being processed .
b ) Monitoring the contents of memory .
5. Configuring Devices . A driver , short for device driver . is a small program that tells the operating system how to communicate with specifis device . Each device on a computer , such as mouse ,keyboard , monitor , printer , digital camera , card reader and scanner , has it own specialized set of commands and thus required its own specific driver .







Thursday, June 24, 2010

result exam

pada hari selasa yang lepas , kelas kami telah mendapat kertas peperiksaan ict . dan markah saya menurun lagy . rasa macam nak nangis jep masa dapat result tu . orang lain semua meningkat but me menurun menurun and menurun . rasa macam tak puas hati dengan result kali ni . okayhh syira , be strong kayh ? final exam kan ada . you can do it . kalau boleh nak dapat kan A+ and everbody's want it right ? begitu juga dengan saya . saya kan pertingkatkan lagi usaha bagi mencapai impian saya . bukan setakat final exam sahaja malah untuk peperiksaan yang lain . amin. insyaalahh .

Tuesday, May 4, 2010

ports and connectors

pembelajaran pada hari ini adalah mengenai ports and connectors . ports terbahagi kepada empat iaitu Serial port , Parallel port , Universal Serial Bus (USB) port , and FireWire port . FireWire port pula terbahagi kepada tiga iaitu MIDI port , SCSI port and Irda port .

A serial port is a socket on a computer used to connect a modem, data acquisition terminal or other serial devices via a slow-speed serial interface .

A parallel port is a socket on a computer used to connect a printer or other parallel devices via the computer's parallel interface.

A USB port is a socket on a computer or peripheral devices into which a USB cable is plugged in. A USB port, short for universal serial bus port, can connect up to 127 different peripherals together with a single connector.

FireWire is similar to a USB port in that it can connect multiple types of devices that require faster data
transmission speeds. Usually camcorders and other video equipment use this port to transmit data on a computer. Data can move across the port at up to 400 megabits per second.

MIDI port
It is designed to connect the system unit to a musical instrument, such as an electronic keyboard.

SCSI port
It is a special high-speed parallel port used to attach peripheral devices such as disk drives and printers..

IrDA port
Some devices transmit data via infrared light waves. For these wireless devices to transmit signals to a computer, both the computer and the device must have an IrDA port.

Tuesday, April 20, 2010

sudah dapat result !

adoyaaii , result maken teruk . menurun sebanyak 13 markah . sedih jep , exam kali ni teruk . but never mind laa , mid-year nanti saya tetap akan berusaha untuk mendapatkan A atau A- . saya akan teruskan usaha untuk mendapat markah yang lebih tinggi daripada yang sebelum ini . exam kali ni memang saya tak baca pun buku ict tuhh . tatao la apa nak jadi dengan saya ni . mid-year pun semakin hampir . risau laa gakk . saya perlu mendap[atkan yang terbaik untuk menjadi yang terbaek ! chayookk chayokk syira ! never give up kayh ! cheer up !

Thursday, February 25, 2010

result exam

ICT dapat 70 jerkk . okaylah tuh daripada failed . ingatkan failed subjek ni but nope . alhamdullilah ,