Multicore processors work by
a CPU chip with >one processing unit(core)
dual core =2 cores
quad core =4 storing frequently used data in cache memory
the scheduling and prioritizing of tasks for the computer processor is coordinated by the software running at the time
Switches alternating current (AC) provided from a wall outlet to lower voltages in the form of direct current (DC).
Front Side Bus
This central connecting point between the processor and the system devices has an
affect on the overall speed
when running several programs at once , the OS places data that will not fit into RAM into
when printing a document from the WPP which step does the OS perform first?
checks to see if the printer is online
read-only memory (ROM)
:Permanent memory that holds information such as the BIOS and instructions that the computer uses to start the operating system.
Infrared Data Association (IrDA)
port:A port that transfers data from one device to another using infrared light waves.
Fire Wire port
same as serial bus architecture as USB(9pin)
The newest version of FireWire supports a data rate of 800 Mbps page 69
Processor speed is measured in
gigahertz, abbreviated GHz. The more gigahertz of processor speed, the faster your computer will run. Today you might see faster computers averaging 2.5 to 3.0 gigahertz,
The capacity of your hard drive
is an important consideration for efficient data storage and retrieval. Hard drive capacity is measured in GB. Typical consumer PCs might have 160 GB to 500 GB of storage.
b. chemical. P72
A mouse can use various types of technology for its pointing functions, including all of the following except
Code that checks and starts computer devices such as memory, monitor, keyboard, and disc drives, and directs the hard drive to boot up and load the operating system (OS) to memory.
BIOS, Basic Input Output System,
is stored in ROM. >>>>>During the boot-up sequence, the BIOS checks devices = memory, monitor, keyboard, and disc drives to insure they are working properly and to start them up. >>>>It also directs the hard drive to boot up and load the operating system (OS) to memory.
the memory your computer uses to run programs. RAM chips come in different types such as DRAM and SDRAM. Most current computers use a variation of SDRAM.
RAM chips are rated by access speed
The faster this speed, the faster a request for data stored on your system can be completed. RAM access speed is MHz If you run several programs at once or look for higher speed RAM. A typical access speed is 800 MHz
RAM access speed is measured in
Random ,rated by ACCESS speed, used in OS and applications MEGAhertz (MHz) is NON volatile memory
high-speed serial technology for connecting peripherals to a computer; particularly popular for multimedia peripherals such as digital video camcorders and other high-speed devices like hard disk drives and printers
to connect to internet
built in wireless adapter, include a port for connecting a cable to your computer