2. Built-in Data Types

More documents

Recommendations

Info

• Numerals• Positional notation – base 10• Other bases• Digits• Names of numbers• Hexadecimal• Arithmetic• Other numbers6
• The symbol used to write a number is called anumeral• 23 is an Arabic numeral and XXIII is a Roman numeralfor the number we call “twenty-three”• Our standard (Arabic) numerals are positional: thebase 10 digits are use• Roman numerals are not positional – they do not usea base• Using a base makes possible algorithms fordoing computations such as multiplication anddivision• You learned algorithms for multiplying and dividingArabic numerals• Try them with Roman numerals!7
Page 1 and 2: Department of Computer ScienceDr. J
Page 3 and 4: • Each bit is either 0 or 1, so i
Page 5: • Data such as sound (e.g., music
Page 9 and 10: • Base 10 probably arose because
Page 11 and 12: • We are used to writing numbers
Page 13 and 14: • The algorithms you learned for
Page 15 and 16: • From another base to decimal is
Page 17 and 18: • Different kinds of numbers• P
Page 19: • For efficiency, Python uses a s
Page 22 and 23: • Idea is to trade accuracy for r
Page 24 and 25: • Python uses a storage scheme wi
Page 26 and 27: • Differences• Addition, subtra
Page 28 and 29: • For these operations, arithmeti
Page 30: • In math, we use superscripts to
Page 33 and 34: • Basics• Naming variables• A
Page 35 and 36: • The name of a variable must be
Page 37 and 38: • The print statement distinguish
Page 39 and 40: • We often want to increase the v

2. Built-in Data Types

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?