Lecture2 - Csci 3003 Introduction to Computing in Biology(Spring 2010 Introduction to programming Prof Chad Myers Department of Computer Science

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Introduction to programming Prof. Chad Myers Department of Computer Science and Engineering University of Minnesota [email protected] Csci 3003: Introduction to Computing in Biology (Spring 2010)
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What is a computer? Central Processing Unit Memory Input Devices Output Devices Secondary Memory Adapted from “Introduction to Computing and Programming with Java: A Multimedia Approach” by M. Guzdial and B. Ericson
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3 What is a computer? Central Processing Unit (CPU) (also known as the processor ) Executes instructions Main Memory (also known as RAM ) Internal storage that holds the programs (instructions and data) currently being executed by the CPU Made up of electronic “on-off” switches, each of which represents 0 or 1 and is called a bit (binary digit) It’s volatile (information stored in it is not retained when power is turned off ) Adapted from “Introduction to Computing and Programming with Java: A Multimedia Approach” by M. Guzdial and B. Ericson
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4 What is a computer? Secondary Memory : hard disks, CDs, DVDs, USB sticks Provide long-term ( persistent ) storage for programs and other information Organized as files , each of which has a file name and a folder ( directory ) that contains it. Input/Output (I/O) units : keyboard, mouse, screen, printer, webcam, etc. Used for communicating information
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This note was uploaded on 10/21/2011 for the course CSCI 3003 taught by Professor Staff during the Spring '08 term at Minnesota.

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Lecture2 - Csci 3003 Introduction to Computing in Biology(Spring 2010 Introduction to programming Prof Chad Myers Department of Computer Science

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