改变的英语
10 operate without being held up by the (4) . In order for a buffer to be (5) , the size of the buffer and the algorithms for (6) data into and out of the buffer need to be (7) by the buffer (8) . Like a cache, a buffer is a "midpoint holding place" but (9) not so much to accelerate the (10) of an activity as to support the coordination of parate activities.
Text B
寤寐的拼音PC Hardware Basic什么马奔腾成语
骂老师的话
1．Computer ca (PC enclosure)清利头目
传语>画玫瑰花
Computer systems are general-purpo devices that may be modified to perform particular tasks or functions. Such general-purpo computers typically include housings for enclosing various components and circuitry associated with operating the general-purpo computers. The computer enclosure is ud to protect the components and circuitry houd therein from physical damage, and to prevent electromagnetic signals generated by components of the computer from escaping and causing electromagnetic interference (EMI) to other electronic devices in the vicinity of the computer. A typical c
omputer enclosure includes a chassis, an expansion card at, a front bezel and a plurality of components connectable to external apparatus and systems. In a typical application, a computer ca has a high structural integrity to protect against physical impact, and conductive, shielding materials to reduce EMI emissions. The conductive components of the computer are also grounded to the ca to protect urs and computer components from electric shock. In asmbly, the bezel, the side panels and the cover are directly cured to the ba with screws. In order to remove the bezel or the cover, the screws must be dingaged from the ba one by one. Some computer enclosures adopt hooks to reduce or even eliminate the need for screws. H ooks formed on panels of the enclosure engage in recess defined in other panels of the enclosure. Modern computer systems compri not only a motherboard, but also one or more expansion cards that provide specialized functions. A rear panel of a computer ca typically defines a plurality of expansion slots therein. Each expansion card typically compris a slot cover attached at one of the expansion slots, to correctly position the corresponding expansion card. In most cas, the computer housings take the form of a box, as for example, the housings associated with tower style computers.
2．PC motherboard
A general computer system is basically built with a motherboard, interface cards and peripherals. Th去海钓
e motherboard is the physical arrangement that contains the system’s basic circuitry and components. The motherboard functions to facilitate communication between each of the internal components of the system, which usually contains a controller chip t, veral slots for installing the interface cards, a
central processing unit (CPU) and veral memory module slots for accommodating the memory modules. Typically, a computer motherboard includes many input/output (I/O) ports for connecting to
various peripherals, and the I/O ports are arranged on the personal computer. A computer motherboard
