Video Card • What’s a Graphics Card? – A modern graphics card is a circuit board with memory and a dedicated processor. – Converts digital information into the pixels to display it on the monitor. • Frame Buffers – The card simply holds a frame of information that is sent to the screen. – Pixel updates are done by the microprocessor. – Slow. • Graphics accelerators with GPU – Pixel updates are done by the GPU. – GPU is optimised for graphics operations.
Bus Interfaces PCI • Peripheral Components Interconnect
• Accelerated Graphics Port
• On board graphics accelerators share system memory.
Video Card contd...
• Wide range of cards – 3D Accelration. – Video Memory. • Modern day Graphics cards are more powerful than Pentium processor! • Expensive component of your Computer
• Choosing a Graphic card – PCI or AGP. – Integrated or Add-on card. – Non-Accelrated or 3D accelrated. – Cost.
Sound Card
• Converts digital data (bits) into analog sound wave and vice-versa. • Has Digital Signal Processor, RAM, ADC and DAC. • Has jacks for speaker, microphone, line in, line out and joysticks. • Choosing a soundcard – Integrated or External add-on card. – CPU Utilization. – Sound reproduction capabilities (dolby, 5.1 channels etc.). – Cost.
Network Interface Card
• Connects PC to LAN (Local Area Network). • Ethernet, Token Ring. • Speeds – 10Mbps – 100Mbps • Onboard or Add-on Card?
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