Computer Science Pdf For example, • 1 kilobyte = 1000 byte • 1 megabyte = 1000000 bytes • 1 gigabyte = 1000000000 bytes • 1 terabyte = 1000000000000 bytes and so on. Computer science, new languages and technologies are created and change at breakneck speeds. faculty and students are regularly trying to give away stacks of textbooks.
Computer Science Pdf Computer File Laptop Trying to look over an undifferentiated mass of 0s and 1s is difficult, so we organize them into groups of eight. a set of 8 bits is referred to as byte. while bits and bytes are represented by the state of electronic switches in computer memory, they can be represented differently in other storage media. • 8 bits make a byte (8 bits = 1 byte). • different types of information (numbers, text, images, etc.) are encoded into binary in different ways. this means the raw data binary representation needs to be decoded according to its type to make sense as useful information. Humans think about numbers in decimal; computers think about numbers in binary • base conversion to go between • hex is more human readable than binary all information on a computer is in binary • nice because big difference between “high” and “low” binary encoding can represent anything! • program needs to know how to interpret. Numbers that contain only two digit 0 and 1 are called binary numbers. each 0 or 1 is called a bit, from binary digit. a binary number of 4 bits is called a nibble. a binary number of 8 bits is called a byte. a binary number of 16 bits is called a word on some systems, on others a 32 bit number is called.
Computer Science 2 Pdf Input Output Computer Data Storage Computer science and programming • there are many different fields within cs, including: • software systems • computer architecture • networking • programming languages, compilers, etc. • theory •ai • experts in many of these fields don’t do much programming! • however, learning to program will help you to develop. Computer science igcse chapter 1 notes free download as powerpoint presentation (.ppt .pptx), pdf file (.pdf), text file (.txt) or view presentation slides online. 1. the document discusses binary, decimal, and hexadecimal number systems. • decimal (from latin decimus) means tenth – a position numeral system (unlike, say roman numerals) – natural representation for financial transactions (problems?). Lecture 1: bits, bytes, and integers aist3020 introduction to computer systems 1.
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