TAILIEUCHUNG - Seminars in IT for Businesses - Lecture 15: Infrastructure of information systems for BIS (Part 2)

In this chapter, students will be able to understand: Primary storage, Random Access Memory (RAM), Read-Only Memory (ROM), secondary storage, hard drive, access speed, magnetic medium, input devices,. | Part 2 Primary storage - The computer’s main memory, which consists of the random access memory (RAM), cache memory, and the read-only memory (ROM) that is directly accessible to the CPU PRIMARY STORAGE Do you use primary storage? If so, when and how? Random access memory (RAM) - The computer’s primary working memory, in which program instructions and data are stored so that they can be accessed directly by the CPU via the processor’s high-speed external data bus Volatility Cache memory Random Access Memory (RAM) Volatility - refers to RAM’s complete loss of stored information if power is interrupted Cache memory - a small unit of ultra-fast memory that is used to store recently accessed or frequently accessed data so that the CPU does not have to retrieve this data from slower memory circuits such as RAM What types of files are typically stored in cache memory? Internet sites Read-only memory (ROM) - The portion of a computer’s primary storage that does not lose its contents when one switches off the power Flash memory Memory card Memory stick Read-Only Memory (ROM) Flash memory - a special type of rewriteable read-only memory (ROM) that is compact and portable Memory card - contain high-capacity storage that holds data such as captured images, music, or text files Memory stick - provide nonvolatile memory for a range of portable devices including computers, digital cameras, MP3 players, and PDAs Memory sticks are extremely useful devices for storing and transferring files For students who have not yet been introduced to a memory stick demonstrate to the classroom how you store and transfer files to and from the device Primary Storage Register RAM Cache Secondary storage - Consists of equipment designed to store large volumes of data for long-term storage Magnetic Media: Hard disks, jump-stick/ flash / USB drives Optical Media : CD, DVD SECONDARY STORAGE A computer with 256 MB of RAM translates into the RAM being able to hold roughly 256 million .

• Thương mại điện tử
• IT for Businesses
• Seminars in IT for Businesses
• Information technologies
• Economic system
• Information age
• Infrastructure of information systems
• Small businesses
• Modern management of small businesses
• Foundations for small business
• Family businesses
• Business plan
• Marketing strategy
• Internet electronic community
• Electronic business
• Information technology support
• Information systems infrastructure
• Information systems
• Management information systems
• IT infrastructure
• Computer hardware
• Global business today
• Managing data resources
• Managing information
• Internet technologies
• Ethics in information technology
• Communication technology
• Communication technology on business
• Value driven business
• Information type
• Information quality
• Database integrity
• Database design
• Network applications
• Telecommunication networks
• Disruptive technologies
• Advantages of ebusiness
• Networking communities
• Organizational systems
• Enterprise applications
• Enterprise systems
• Information systems development