Active Vocabulary
Date: 2015-10-07; view: 399.
controller [kǝn'trɔlǝ] - êîíòðîëëåð network [‘netwǝ:k] - ñåòü
CPU (central processing unit) – áëîê öåíòðàëü- NIC (network interface card) – ñåòåâàÿ
íîãî ïðîöåññîðà êàðòà
driver card [‘draɪvǝ] - äðàéâåð port replicator [‘replɪkeɪtǝ] – ðàñøèðèòåëü
expansion card [ɪks'pænʃn] – êàðòà ðàñøèðåíèÿ ïîðòîâ
expansion slot – ãíåçäî ðàñøèðåíèÿ sound card [saund] – çâóêîâàÿ êàðòà
graphics card [‘ɡræfɪks] – ãðàôè÷åñêàÿ êàðòà storage device [‘stɔ:rɪʤ] - çàïîìèíàþùåå
memory expansion slot – ãíåçäî ðàñøèðåíèÿ óñòðîéñòâî ïàìÿòè system unit [‘sɪstɪm] – ñèñòåìíûé áëîê
videocard [‘vɪdiǝukɑ:d] - âèäåîêàðòà
Text 2.4. Read and title the text.
Storage devices in the form of a disk or flash-cards are used to store the programs and data that are not being used. Note that the American spelling of disk is commonly used, although the British spelling, disc, is sometimes used. Before a program or data can be used, it must be transferred from the storage device to the main RAM memory. Hard disks consist of a set of magnetic coated metal disks that are vacuum-sealed inside a case to keep out the dust. The magnetic surfaces of the disks are formatted using a read/write head to provide magnetic storage areas. These storage areas form concentric circles called tracks and each track is subdivided into sections called sectors. The disks are rotated at high speed and read from or written to by the read/write head that moves across the surface of the disks. In server computers, hard disks can be connected together and made to operate as one unit using RAID (a redundant array of inexpensive disks). This can speed up the system and provide a way of recovering data if the system crashes (fails suddenly and completely, usually referring to the failure of a hard disk). There is a variety of optical storage devices that use laser light to read or write to a disk, including: CD-ROMs (compact disk read only memory), CD-R (recordable compact disk), CD-RW (rewritable compact disk), DVD (digital versatile disk – previously known as digital video disk).
An input device called a barcode reader is a special type of scanner for reading barcodes (a set of printed bars of varying thickness that are used to identify a product e.g. used to price items in supermarkets).
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