Lecture 3 Number Representation Integers -Several bytes together are used to store integers -2 bytes (1/2 word) form a short integer -4 bytes (1 word) form a regular integer -8 bytes (2 words) form a long integer -Computers work with fixed sized numbers, aka finite precision numbers(fixed when the computer is designed and built). oWhat does this mean? Computers can only deal with numbers that can be represented by a fixed number of digits. Example: Only positive integer numbers represented by, say, 3 decimal digits 1000 unique numbers (000, 001, 002, …, 999) Impossible numbers: > 999; negative numbers; fractions; irrational numbers; complex numbers
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