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Dsc340

In: Business and Management

Submitted By suguan
Words 2104
Pages 9
Ch. 5. Moore's Law and More: Fast, Cheap Computing, Disruptive Innovation, and What This Moore's Law definition: Chip performance per dollar doubles every eighteen months. Moore’s Law applies to chips—broadly speaking, to processors and chip-based storage. Microprocessor is the brain of a computing device. It’s the part of the computer that executes the instructions of a computer program. For processors, Moore’s Law means that next generation chips should be twice as fast in about eighteen months, but cost the same as today’s models. Random-access memory (RAM ) Fast, chip-based volatile storage in a computing device Flash memory Nonvolatile, chip-based storage Volatile memory: Storage that is wiped clean when power is cut off from a device Nonvolatile memory: Storage that retains data even when powered down. Solid state electronics: Semiconductor-based devices Semiconductors: Substance such as silicon dioxide used inside most computer chips that is capable of enabling and inhibiting the flow of electricity Optical fiber line: High-speed glass or plastic-lined networking cable used in telecommunications 1 Byte = 8 Bits 1 KB = 8,192 Bits 1 kB = 1,024 Bytes 1MB =1024 KB 1GB = 1024 MB 1TB = 1024 GB 1PB = 1024 TB 1EB = 1024 PB 1ZB = 1024 EB Blu-ray disc: 25-50 GB Feature DVD movie: 4-7 GB Digital picture: KB – MB Document: KB Hard drive 500 GB – 2 TB RAM 4-16 GB CPU GHZ Network speed...

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Dsc340

...DSC 340 Study Guide Mick McQuaid Spring 2014 Following is a study guide for DSC 340. It’s a living document to be updated by the instructor every week during the term based on readings, contributions from students, and updates in the rapidly changing world of business information systems. 1. PERSONAL INFORMATION SYSTEMS Extensive research over the past twenty years, some of it by Tom Malone at MIT and Susan Dumais at Microsoft Research, has explored how people organize personal information. One example that helps people understand the problem of personal information is the knife analogy, described below. One important finding about personal information management has been that people are prone to do one or some combination of these two things: filing and piling. After reviewing the following topics, conclude the study of personal information systems by doing the share best practices exercise. 1.1 Knives In the Home Suppose you have just won a complete set of knives for your home. Where should you put them? You could have a single cabinet to store all knives, but it is more likely that you will distribute the knives to different rooms, placing them near where they will be used: steak knives in a buffet in the dining room, cooking knives in the kitchen, handyman knives in a garage workshop. When you need a particular knife, it will be in the context of a current task, such as preparing food, setting a table, or cutting a length of rope for a clothesline.......

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