What does CPU do?
Processes instructions, performs calculations, manages the flow of information through the computer system and is responsible for processing data into information.
How is CPU speed measured?
How can you determine your CPU usage?
Check Task Manager.
How can you tell whether CPU is limiting your system?
By watching how busy it is as you work on your computer.
What is RAM?
Your computers temporary memory. It remembers everything the computer needs to process data into information. It is lost when computer is powered down.
Is RAM considered volatile or nonvolatile storage?
What is your computers physical memory?
The amount of RAM sitting on memory modules in your computer.
What type of memory does your operating system use?
How much RAM do you need?
Enough to run the operating system plus the software applications you're using, plus a bit more to hold the data you will input.
What is hyperthreading?
Technology that permits quicker processing of information by enabling a new set of instructions to start executing before the previous set has finished.
What are benchmarks?
Measurements used to compare CPU performance between processors.
What are some advantages Desktops have over Notebooks?
Better computing power gained for your dollar, easy to add new ports and devices, large monitor, and more reliable.
In order to conduct a system evaluation what should you check?
CPU subsystem, Memory subsystem, Storage subsystem, Video subsystem, Audio subsystem, and ports.
What is the primary distinction between CPUs?
What factors determine a CPUs processing power?
Number of cores, how quickly the processor can work (clock speed), and the amount of immediate access memory (cache memory).
What is cache memory?
A for of random access memory that is more accessible to the CPU than regular RAM, and is therefore much faster.
What is the front side bus?
The "highway" on which data travels between the CPU and RAM.
What provides the greatest nonvolatile storage capacity in a computer and why?
Hard drives because they are economical and have faster access time than other storage devices.
What are memory modules?
Small circuit boards that hold a series of RAM chips an fit into special slots on the motherboard.
What are most memory modules in today's systems called?
Dual inline memory modules (DIMMs).
Which nonvolatile storage option has the fastest access time?
Solid State drive (SSD).
What is the data transfer rate?
The rate at which a hard drive can transfer data to other computer components (measured in megabits or megabytes).
What is a platter?
Coated round, thin plates of metal stacked on a spindle that compose a hard drive.
What is access time?
The time it takes a storage device to locates its stored data and make it available for processing (measured in milliseconds).
What is the difference between RAID 0 and RAID 1?
RAID 0 spreads data onto two physical drives and is much faster. RAID 1 uses trow drives as well but the second acts as an exact mirror of the first providing a perfect backup.
What are optical drives?
Disc drives that use a laser to store and read data.
What is a video card?
A expansion card to translate binary data into the images you view on your monitor.
What is video memory?
RAM on video cards.
What differentiates GPU from CPU?
GPU is specialized in handling 3-D graphics and image and video processing with incredible efficiency and speed.
What does Moore's Law predict?
That the number of transistors inside a CPU will increase so fast the CPU capacity will double every 18 months.
What are the two main video card manufacturers?
ATI and Nvidia.
What is bit depth?
The number of bits a video card uses to represent each pixel on the monitor.
What are most video cards today?
24-bit known as true color mode.
What is a sound card?
An expansion card that attaches to the motherboard inside your system unit enabling the computer to make sound.
What is a 3D sound card?
An expansion card that enables a computer to produce sounds that are omnidirectional.
What is surround sound?
A type of audio processing that makes the listener experience sound as if it were coming from all directions.
Dolby is a current what?
Surround sound standard.
What do you need in order to set up surround sound on your computer?
A set of surround-sound speakers and a sound card that is Dolby Digital-compatible.
What should you do to ensure your system performs reliably?
Clean out your Startup folder, clear out unnecessary files, run spyware and adware removal programs, and run the Disk Defragmenter utility on your hard drive.
What can you use to document a problem you may be having with your computer?
Problem Step Recorder.
SuperFetch is a memory-management technique that does what?
Preloads the applications you use most into system memory.