INFS1602 Lecture Notes - Lecture 4: Computer Hardware, Server Farm, Microsoft Excel
24 Oct 2018
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4. 1: what do busines s professionals need to know about computer. Computer hardware consists of electronic components and related gadgetry that input, process, output, and store data according to instructions encoded in computer programs or software. Server a computer that is designed to support processing requests from many remote computers and users. Server farm a collection of, typically, thousands of servers. Server infrastructure is delivered as a service via the internet is a cloud. Computers represent data using binary digits, also called bits (either a zero or a one): all forms of data are represented by bits, bits are grouped into 8-bit chunks called bytes. Specifications for the data storage capacity of main memory, disks, and other computer devices are expressed in bytes. Cpu speed is expressed in cycles called hertz: a de(cid:448)i(cid:272)e"s (cid:272)a(cid:272)he a(cid:374)d (cid:373)ai(cid:374) (cid:373)e(cid:373)ory are volatile (contents are lost when power is off), magnetic and optical disks are non-volatile (contents survive when power is off).
