1 / 11

Bits and Bytes

Bits and Bytes. BIT. Modern computers are binary: Everything is represented as being on one of two possible states: the state of being a 1 the state of being a 0 A bit is the name for this smallest unit of storage in a computer. Bit is sort-of derived from "Binary digIT". Digital.

arawn
Download Presentation

Bits and Bytes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Bits and Bytes Intro to IT - Bits and Bytes

  2. BIT • Modern computers are binary: • Everything is represented as being on one of two possible states: • the state of being a 1 • the state of being a 0 • Abit is the name for this smallest unit of storage in a computer. • Bit is sort-of derived from "Binary digIT". Intro to IT - Bits and Bytes

  3. Digital • Marketing and advertising folks have decided to characterize anything that is based on bits as being "digital". • Digital Cable TV • Digital Telephone • Digital Camera • Digital Audio • A better name might actually be discrete... Intro to IT - Bits and Bytes

  4. Byte • A ordered sequence of 8 bits. • Modern computers are based on memory systems organized as bytes of memory. • Memory sizes are typically given in numbers of bytes: • "I would like a burger, fries and 512 Mega bytes of memory". • "I have a 32Giga byte iPhone, so I am better than you". Intro to IT - Bits and Bytes

  5. 64 bit machine • A machine that processes information in 64 bit chunks. • The processor simply transports the information 64 bits at a time • The data-path, or bus, that runs to and from the processor is 64 bits wide. • 8 bits still = byte, 8 bytes at a time Intro to IT - Bits and Bytes

  6. How many bytes are there? • Keep in mind that a byte is a sequence of 8 bits. • Each bit can be either a 0 or a 1. • How many sequences of 8 0/1s are possible? • Here are a few: 00000000 00010000 10000000 10101010 Intro to IT - Bits and Bytes

  7. # of byte values: derivation 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 # of bytes = 28 = 256 • There are 256 possible byte values. • Although I may have 4 billion+ bytes in my iPod, there are only 256 different values, so many of them are identical! Intro to IT - Bits and Bytes

  8. Base 2 Numbers(binary numbers)‏ • We can talk about byte values by treating a byte as a base 2 number: 64 + 16 + 4 + 2 = 86 010101102 = 8610 Intro to IT - Bits and Bytes

  9. Hexadecimal • Base 16 is also used when talking about byte values. • Each group of 4 bits corresponds to a single hex digit. Intro to IT - Bits and Bytes

  10. Binary to Hex 110101102 = D616 = 21410 Intro to IT - Bits and Bytes

  11. Binary-Hex-Decimal QuizFill in the blanks Intro to IT - Bits and Bytes

More Related