World Science and Technology – Exercise – 3

106. The IBM PC-XT was the first to include a hard drive. What was the capacity of this disk?

(a) 20 MB
(b) 1.44 MB
(c) 10 MB
(d) 750 KB

Answer
Answer : (c)
Explanation
Explanation : The original IBM PC used 5.25-inch floppy disks to store its operating system and programs. IBM referred to the new hard disk as a Fixed Disk. Today, even a the operating system wont fit on a 10 MB disk. Let us discuss.
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107. What was the clock speed of the original IBM PC?

(a) Less than 5 MHz
(b) 10 MHz
(c) 8 MHz
(d) Just over 16 MHz

Answer
Answer : (a)
Explanation
Explanation : The original IBM PC ran at a breathtaking 4.77 MHz (Smmmmmmokin!) Today there are new PC processors that run faster than 3 gigahertz. Let us discuss.
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108. On what date was the debut of the first IBM Personal Computer?

(a) August 12, 1981
(b) January 21 1979
(c) August 21, 1980
(d) January 12, 1982

Answer
Answer : (a)
Explanation
Explanation : Before IBM created its personal computer, two types of computer systems, Apple II and CP-M, dominated the microcomputer world. Neither of these systems were PC compatible, or Mac-compatible (the two primary standards in place today). The original IBM PC became a new standard in the microcomputer industry. Since then, hundreds of millions of PC-compatible systems have been sold, as the original PC grew into a large family of computers and peripherals. More software has been written for this computer family than for any other system on the market. Let us discuss.
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109. Which of the following word processors came first?

(a) WordPerfect
(b) Lotus Notes
(c) MS Word
(d) WordStar

Answer
Answer : (d)
Explanation
Explanation : Before the invention of word processing and spreadsheet software, personal computers had little value in the mainstream business world. WordStar was used before the days of function keys and the mouse. It, instead, used a set of Ctrl and Alt key combinations to navigate and edit text documents. Let us discuss.
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110. The Central Processing Unit is an embeded chip that acts as the ‘brains’ of a computer. What Intel chip was used in the Altair (the first real personal computer)?

(a) 6502
(b) 8080
(c) 6400
(d) 8286

Answer
Answer : (b)
Explanation
Explanation : The Intel 8080 was a jazzed-up calculator chip. It was included in microcomputer kits which were little more than demonstration tools and did little except blink lights. Besides the 8080 chip, the Altair included a power supply, a front panel with a large number of lights and 256 bytes (not kilobytes) of memory. The kit sold for {$395} and had to be assembled. Let us discuss.
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