2's compliment of octal number 23
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Step-by-step explanation:
In the binary system, all numbers are a combination of two digits, 0 or 1. Each digit corresponds to a successive power of 2, starting on the right.
For example, 12 in binary is 1100, as 12 = 8 + 4 = 1*2³ + 1*2² + 0*2¹ + 0*2⁰ (using scientific notation). An extended version of the binary system is the hexadecimal system (which uses base 16 instead of base 2). The latter is frequency used in many computer softwares and systems.
Learning about binary leads to many natural questions arising - what about negative numbers in the binary system? Or how do I subtract binary numbers? As we can only use 1 to show that something is present, or 0 to mean that there is a lack of that thing, there are two main approaches:
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