Answer:
24.167 micro seconds.
Explanation:
The given rotation rate = 7200 rpm = 7200 rounds per minute
Rotational latency is the average time taken for the head to reach starting of sector
.
Rotational latency (in micro seconds) = (1 / (RPM / 60)) * 0.5 * 1000
(1/(7200/60))* 0.5 * 1000 = 4.167 ms
Thus, rotational latency = 4.167 ms.
Seek time = 20 ms
The average time taken for the access head to get to the beginning of randomly selected sector will be equal to the average time to first reach the random track plus the average time taken to reach random sector
.
= 20 ms + 4.167 ms = 24.167 micro seconds.
Thus, it would take 24.167 micro seconds to get the access head to the beginning of a randomly selected sector on a randomly selected track.
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In the RGB (Red, Green, Blue) color model, the numbers 0-255 represent the intensities of each color beam
.Each number represents an intensity value is on a scale of 0 to 255, It can be also written in hexadecimal form, from 00 to FF.
RGB values are encoded as 8-bit integers, which range from 0 to 255.
Answer:
Explanation:
- Keywords: Keywords are those words which have special meanings in QBASIC. Keywords are formed by using characters of QBASIC characters set. Keywords are statements, commands, functions (built in functions) and names of operators. The keywords are also called Reserved Words. Some reserved words are CLS, REM, INPUT, LET, PRINT, FOR, DO, SELECT, ASC, SQR, LEN, and INT.
- Constants: They are divided into:
- Numeric constants: include all numbers (real, integer, not real,...)
- Character constants: include all character sete (letters, digits, symbols) between two double quotation marks e.g. "BASIC", "the width is 83" etc.
3. Variables: A variable is a name which can hold or contain a value.
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