Infomration Systems Chapter 3 Review Questions 1-18 (Page 130)

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Chapter 3 Review Questions 1-18 (page 130)
1. When determining the appropriate hardware components of a new information system, what role must the user of the system play? When determining the appropriate hardware components of a new information system, the user of the system must assemble an effective and efficient system. The user should select and organize components while understanding the trade-offs between overall system performance and cost, control, and complexity. The user involved in selecting their organization’s computer hardware must clearly understand current and future business requirements so they can make informed acquisition decisions. 2. What is the role of the chip set? How is it related to the CPU? The chip set coordinates the communication between the CPU and other components of the computer. A given chip set is designed to work with a specific CPU. The ship set controls the communications to and from the CPU; it plays a crucial role in determining the system’s performance. The chip set is a number of integrated circuits designed to perform one or more related functions. 3. Identify and briefly discuss the fundamental characteristics that distinguish RAM from ROM memory. RAM Memory: A form of memory in which instructions or data can be temporarily stored. Volatile Storage Devices – meaning they lose their contents if the current is turned off or disrupted. Mounted directly in the computer’s main circuit board or in other chips mounted on peripheral cards that plug into the main circuit board. Consist of millions of switches that are sensitive to changes in electric current. RAM comes in many varieties:

Static Random Access Memory
Is a byte-addressable storage used for high-speed registers and caches. Dynamic Random Access Memory
Is byte-addressable storage used for the main memory in a computer. Double Data Rate Synchronous Dynamic Random Access Memory Is an improved form of DRAM that effectively doubles the rate at which data can be moved in and out of main memory. Other forms of RAM include

DR2SDRAM
DDR3 SDRAM
ROM Memory: A nonvolatile form of memory.
Nonvolatile – meaning that its contents are not lost if the power is turned off or interrupted. Provides permanent storage for data and instructions that do not change. ROM memory also comes in many varieties:

Programmable Read-Only Memory
Used to hold data and instructions that can never be changed. Erasable Programmable Read-Only Memory
Is programmable ROM that can be erased or reused.
Electrically Erasable Programmable Read-Only Memory
Is user-modified read-only memory that can be erased and reprogrammed repeatedly through the application of higher than normal electrical voltage. 4. What is RFID technology? Identify three practical uses for this technology. RFID is Radio Frequency Identification, which is a technology that employs a microchip with an antenna to broadcast its unique identifier and location to receivers. The purpose of an RFID system is to transmit data by a mobile device, called a tag, which is read by an RFID reader and processed according to the needs of an IS program. Three practical uses for this technology:

Retail items – install in-store readers that track inventory on the shelves to determine when shelves should be restocked. Tacking employees – track miners, equipment, and vehicles to ensure that they can be located quickly in the event of an emergency. Post Office – Tracking packages, signatures of delivery, returns, etc. 5. What issues can arise when the CPU runs at a very fast clock speed? What measures are manufactures taking to deal with this problem? The faster the clock speeds of the CPU, the more heat the processor generates. This heat must be dissipated to avoid corrupting the data and instructions the computer is trying to process. Manufactures are exploring various means to avoid heat problems in their new designs. Demand-based switching is a...
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