Advances in Data Storage Technology Contents I. Introduction 3 II. Purpose of storage 4 III. Hierarchy of storage 6 A. Primary storage 6 B. Secondary storage 7 C. Tertiary storage 7 D. Off-line storage 8 IV. Characteristics of storage 9 A. Volatility 9 B. Mutability 9 C. Accessibility 10 D. Addressability 10 E. Capacity 11 F. Performance 11 G. Energy
Premium Computer data storage
Input-Process-Output-Storage (IPO S) A mobile device is a small and handy computing device. Mobile device usually come with a touch or non- touch display with a mini keyboard. Today‚ mobile devices have become popular to everybody since they are convenient. As on the year 2012‚ reports had claimed that more 75% of the world population owns a mobile device. Mobile device are also considered as a computer systems because it uses the Input-Process-Output-Storage (IPOS) model. One of the examples
Premium Video Computer Computer data storage
SAN is called Storage Area Network also called Server area Network. A storage area network (SAN) is a high-speed special-purpose network (or subnetwork) that interconnects different kinds of data storage devices with associated data servers on behalf of a larger network of users. Typically‚ a storage area network is part of the overall network of computing resources for an enterprise. A storage area network is usually clustered in close proximity to other computing resources but may also extend
Premium Computer storage Computer data storage Computer
INPUT DEVICES 1. Where does the name QWERTY keyboard come from ? The name QWERTY comes from the first six letters on the top row of the alphabet keys. 2. Why do think the QWERTY keyboard is the most popular method of data entry? The QWERTY keyboard is the most popular method of entering data because an easy way of usage and when you get used to it you start typing faster 3. Who might make use of a concept keyboard? A concept keyboard might be used by a fast food restaurant
Premium Input device Credit card Video game
OUTPUT DEVICES Output devices are things we use to get information OUT of a computer. Here are some examples of output devices:- Monitor George Doyle/Stockbyte/Getty Images The most common computer output device is the monitor or computer screen. Monitors create a visual display from processed data that users can view. They come in a variety of screen sizes and visual resolutions. There are two types of computer monitors‚ CRT and flat panel. CRT monitors use phosphorescent dots to create the
Premium Inkjet printer Cathode ray tube Computer
an information system. It consists of the following: the computer processing unit; various input‚ output‚ and storage devices; and physical media to link these devices together. DIAGRAM AM SENDING AS A PHOTO NIKKU:WATSAP LO CPU AND PRIMARY STORAGE: Central Processing Unit(CPU): · Manipulates symbols ‚numbers and letters. · Controls other parts of the computer system. Primary Storage: · Temporarily stores program instructions. · Data being used by the instructions. Computer software consists
Premium Computer program Computer Computer software
|Identify the legislation that relates to the recording‚ storage and sharing of information in health and social care |4222.209.1.1 | |Explain why it is important to have secure systems for recoding and storing information in a health and social care |4222.209.1.2 | |setting | | |Describe how to access guidance‚ information and
Premium Health care provider Patient Health care
Communication devices Types Communication Devices FAX E-MAIL VIDEO CONFERRENCE PORTABLE MEDIA PLAYERS BLUETOOTH COMPUTERS FAX Fax is short for ‘facsimile’ which means ‘copy’. A fax machine is a device that can send a copy of a paper document over the telephone network. The sending fax converts the light/dark areas of the printed document into noises. These noises travel through the phone system and are received by another fax machine. The receiving fax machine converts the noises into printed
Premium Computer network Personal computer Computer
Theory Notes Task: Output Devices Make sure that you are familiar with all of the information detailed in this booklet. There are a number of tasks for you to carry out‚ be sure to read the information fully whilst completing the tasks. You could be asked about any of this in the test! Use the theory notes in from the teach-ict.com site to help you complete this booklet. TASK 1: OUTPUT DEVICES Output devices let you see data that has been processed or is stored on the hard disk
Premium Inkjet printer Hewlett-Packard Personal computer
ECS-165A WQ’11 110 6. Storage and File Structures Goals Understand the basic concepts underlying different storage media‚ buffer management‚ files structures‚ and organization of records in files. Contents • • • • • Overview of Physical Storage Media Magnetic Disks‚ Tertiary Storage Buffer Management Storage Access File Organization Dept. of Computer Science UC Davis 6. Storage and File Organization ECS-165A WQ’11 111 Classification of Physical Storage Media • Main criteria: Speed with
Premium Computer data storage Computer storage File system