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How do I convert decimal to binary?

There are 2 ways I know to convert decimal to binary, the first way I learnt to use is done by removing the highest power of 2 from the decimal value we have. Lets take 154 as an example. The powers of 2 use...
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Write the number 195 in binary

Binary is base 2, which means that all binary numbers are represented as sequences of 0's and 1'sEach time you to add a zero to the end of a binary number, you multiply it by 2E.g. 1 = 2 0 = 1, 2 = 2 1 = 10,...
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Calculate the file size in bits for a two minute sound recording that has used a sample rate of 1000 Hertz (Hz) and a sample resolution of 5 bits.

First, calculate time in seconds: 2 minutes * 60 = 120 seconds File size (bits) = time (seconds) * sample rate (Hz) * sample resolution (bits) File size = 120 * 1000 * 5 bitsFile size = 600,000 bits
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Answered by James G. • Computing tutor
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i) Convert 01101001 from binary to denary. ii) Convert 27 from denary to hexadecimal. ii) State one use of hexadecimal in computing and why it is more beneficial in this application that binary.

i) 01101001 2 = 105 10 ii) 27 10 = 1B 16 iii) Colour codes, MAC addresses, memory locations, many others.The main advantage of hexadecimal over a number system like binary is that it is far more compact. A 1...
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Answered by Shafaan J. • Computing tutor
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Describe two different functions performed by an operating system [4 marks]

As we can see the question is worth four marks, so we need to identify two functions performed by an operating system, and then be able to give a description of what they actually are. It might be easiest to...
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Answered by Matthew G. • Computing tutor
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