PCs ENVIRONMENT and PERIPHERALS Lecture 4 An expansion cards: - An expansion card (expansion board) is an electronic circuit board that adds more functionality to your computer. - Expansion cards are installed into the expansion slot of a computer motherboard. - It's allow you to upgrade or expand the capabilities of a computer. An expansion cards: Type of expansion cards: 1- Video card. 2- Sound card. 3- Network Interface card. 4- Modem. (internal modem). An expansion cards: -Three points to make a card work successfully in an expansion slot: 1- Physical connection: expansion cards need to be built specifically for the expansion slots (require creation of industry standards) 2- Communication: the card need some way to communicate with CPU (to receive instructions and send data) 3- Drivers: operating system needs some means of enabling users to control the new device An expansion cards: 1- Video card: The video card is an expansion card that allows the computer to send graphical information to a video display device such as a monitor, TV. The Video Card is Also Known As: graphics card, graphics adapter, video adapter. An expansion cards: 2- Sound card: - A sound card is an expansion component used in computers to receive and send audio. -The input device attached to receive audio data is usually a microphone, while the device used to output audio data is generally speakers or headphones. - also known as an audio card An expansion cards: 3- Network Interface card( NIC): - a Network Interface Card(NIC) is an expansion card that enables a computer to connect to a network such as a home network or the Internet using an Ethernet cable with a RJ45 connector. - also known as an Ethernet card and network adapter. An expansion cards: 4- Modem (Internal modem): - Modem: - The word modem is actually short for Modulator/Demodulator. - It is used to connect a computer to the Internet. - There are internal and external modems. An expansion cards: 4- Internal modem: - Internal modem is a circuit board that is inserted into an expansion slot on the motherboard. -Internal modem cannot be moved from one computer to another easily. - Two main types of internal modem : 1- Dial-up modem. 2- wifi (wireless) modem. - Modem: - External modem: - External modem is attached to the system unit as an external device through telephone line. - External modem is connected to computer using cable to COM1 or COM2 port or to USB port. - - It is connected to the telephone wall jack by another cable. -It requires external power supply. An expansion slot: Expansion slots : Expansion card are connected to the slot. A slot located inside a computer (on the motherboard). Allows additional boards to be connected to it. Storage Devices: Storage Devices : are the data storage devices that are used in the computers to store the data. Examples: - Hard drive. - Floppy drive. - Optical drive. - Flash drive. - Flash memory. Storage Devices: 1- Hard Drive : - The hard disk drive is the main, and usually largest, data storage device in a computer. - The operating system, software and other files are stored in the hard disk drive. Connect to the computer using : Data cable SATA socket in the motherboard. Power cable from power supply. Storage Devices: 2- Floppy Drive: - The floppy drive reads data from, and writes data to, a Floppy disk. Connect to the computer using : Data cable FDD socket in the motherboard. Power cable from power supply. Storage Devices: 3- Optical Drive: - Optical drives uses lasers to read and write data on optical discs like CDs, DVDs . Connect to the computer using : Data cable SATA socket in the motherboard. Power cable from power supply. Storage Devices: 4- Flash drive: - USB flash drives are typically removable and rewritable. Storage capacities typically range from 64 MB to 64 GB. - Flash drives are widely used to transport files and backup data from computer to computer Storage Devices: 5- Flash memory cards: A memory card or flash memory card is a solid-state electronic flash memory used with digital cameras, handheld and Mobile computers, telephones, video game consoles, and other electronics. Assignment : What is the Difference between Network Interface Card (NIC) and modem Card ?