CIS 105 Chapt. 2 & 4 Notes
CIS 105 Chapt. 2 & 4 Notes CIS 105
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This 0 page Class Notes was uploaded by Brigette Maggio on Monday January 4, 2016. The Class Notes belongs to CIS 105 at Arizona State University taught by Wood, McCarthy in Fall 2015. Since its upload, it has received 34 views. For similar materials see Computer Appls&Info Technology in Computer Information Systems at Arizona State University.
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Date Created: 01/04/16
CIS 105 91515 McCarthy Chapter 2 Inside the Computer amp Chapter 4 Storage Choosing and Buying a Car NOT here to learn how a computer or printer works but we NEED to know how the inside works Choosing and buying technology You may not know how it works It seems to work every time consumption device iPad creation device surface The System Unit Main body of the computer Contains the motherboard Contains assorted computer components Power supply Cooling fan Disk drives Primary memory Secondary memory Expansion cards slots Based on Moore s Law will the technology purchased today be essentially outdated in 18 months If you purchased 1200 internal hard drives at 90 off are they worth it with the evolution of Cloud Computing no you need cloud computing The Motherboard Sometimes called a System Board or Logic Board Essentially a circuit board Printed Circuit Board PCB use this name on the exam Replaces loose wiring Reduced size Made of nonconductive plastic The motherboard is analogous to land that contains buildings roads and infrastructure magine a large piece of land with an enormous distribution center in the middle with roads from all points of the compass The distribution center is the microprocessor on the motherboard The Microprocessor The brains of the computer Central Processing Unit CPU Measured in Clock Rate how many things you can do in a nanosecond nterprets program instructions Processes data Gives the computer the ability to be programmed The microprocessor is the distribution center in land a computer is binary by very nature True or False only has 2 states ON or OFF bit smallest unit that you have in a computer 1 or 0 byte 8 numbers in a row inside a computer only knows bits and bytesgt machine code or machine language then NEED a device to translate into machine anguagegt keyboard and screen nput is data and information that enters a computer and is translated into machine code like through a keyboard or microphone Output is data and information that exits a computer system and is translated for human comprehension like a computer monitor or speaker input keyboard webcam microphone output computer screen printer Bus Lines Pathways that transfer data and power Controlled by software to connect to devices Measured in width Land Analogy WalMart39s super efficient distribution center microprocessor sits on an enormous piece of land motherboard and has 4 twolane roads bus lines leading to it from all points of the compass Most microcomputers use the American Standard Code for Information Interchange ASCII Power Supply Unit PSU Converts Alternating Current AC to Direct Current DC Some PSU can sense a wide range of AC System Units Store Memory Retain Memory Process Memory Memory holds information that is electronically stored on a computer like spreadsheets images and data Two types of memory oPrimary Memory Volatile What the user is currently working on Secondary Memory Nonvolatile Where information is stored Memory is stored as a 1 or a O and translated for a human with computer screens keyboards microphones etc Primary Storage Random Access Memory RAM Volatile In the form of RAM Chipsets mounted on motherboard Allows data to be accessed in any order No physical movement Secondary Storage Hard drive cloud drive etc Nonvolatile Spinning device hard drive or optical disc Does not require electricity RAM stands for Random Access Memory
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