Lecture 1 - 1/17/2012 1 Introduction to IT Introduction to...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1/17/2012 1 Introduction to IT Introduction to IT Architectures & Architectures & computing systems computing systems CNIT 17600 Lecture 1 Lecture Objectives Understand the difference between architecture & organization Comprehend the many units of measure needed to intelligently AND objectively discuss IT systems Appreciate the history of computing and its influences to IT today Begin identifying the complexities of computing Begin building the knowledge necessary to design, build, manage, maintain, secure, and operate business IT systems 1/17/2012 2 Why Study Computer Architecture? 3 Computers and computing devices Increasingly powerful and increasingly complex Yet, easier to use Acquiring and configuring these devices requires more knowledge than simply being an effective user of devices Design better programs, applications, software, or systems Optimize IT systems Organization vs. Architecture 4 Computer organization Encompasses all physical aspects of computer systems. e.g., circuit design, control signals, memory types. Computer architecture Logical aspects of system implementation as seen by the programmer. E.g., instruction sets, instruction formats, data types, addressing modes. 1/17/2012 3 Computer Components 5 There is no clear distinction between matters related to computer organization and matters relevant to computer architecture. Principle of Equivalence of Hardware and Software: Any task done by software can also be done using hardware, and any operation performed directly by hardware can be done using software.* Computer Components 6 At the most basic level, a computer is a device consisting of three pieces: A processor that interprets and executes programs Memory to store data AND programs A mechanism for transferring data to and from the outside world 1/17/2012 4 An Example System 7 What does it all mean?? Systems of Measure for Computing 8 Measures of capacity and speed: Kilo (K) = 1 thousand = 10 3 and 2 10 Mega (M) = 1 million = 10 6 and 2 20 Giga (G) = 1 billion = 10 9 and 2 30 Tera (T) = 1 trillion = 10 12 and 2 40 Peta (P) = 1 quadrillion = 10 15 and 2 50 Exa (E) = 1 quintillion = 10 18 and 2 60 Zetta (Z) = 1 sextillion = 10 21 and 2 70 Yotta (Y) = 1 septillion = 10 24 and 2 80 1/17/2012 5 Systems of Measure for Computing 9 Hertz = clock cycles per second (frequency) 1 MHz = 1,000,000Hz Processor speeds are measured in MHz or GHz. Byte = a unit of storage 1 KB = 2 10 = 1024 Bytes 1 MB = 2 20 = 1,048,576 Bytes 1 GB = 2 30 = 1,099,511,627,776 Bytes Main memory (RAM) is measured in GB Disk storage is measured in GB for small systems, TB (2 40 ) for large systems....
View Full Document

This note was uploaded on 01/30/2012 for the course CNIT 176 taught by Professor Hansen during the Spring '09 term at Purdue University-West Lafayette.

Page1 / 35

Lecture 1 - 1/17/2012 1 Introduction to IT Introduction to...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online