1) How does the data flow between the CPU and memory? 2) Where is BIOS stored on
ID: 3681655 • Letter: 1
Question
1) How does the data flow between the CPU and memory?
2) Where is BIOS stored on early personal computers? What is the disadvantage?
3) List the type of physical memory in the memory hierarchy from the fastest access to the slowest.
4) Explain the role of cache memory
5) Explain these terms:
Queuing time
Seek time
Rotational latency
6) What is/are the main characteristic(s) of optical storage? Explain how optical storage works.
7) What are the main control lines in memory organization and what is the task associated to each one?
Explanation / Answer
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1) How does the data flow between the CPU and memory?
Through the bus The memory controller is establishes the information flow between memory and the CPU,bus is a data path that consists of parallel wires and connects the CPU, memory and other devices. The bus architecture determines how much and how fast data can move around the motherboard.
The CPU sends a request to the memory controller to memory and gets a report back of when the information will be available. This cycle can vary in length according to memory speed as well as other factors, such as bus speed.
2) Where is BIOS stored on early personal computers? What is the disadvantage?
The BIOS in a PC stored on a ROM chip. Early PCs used a ROM BIOS.The disadvtanges of ROM BIOS
3) List the type of physical memory in the memory hierarchy from the fastest access to the slowest.
4) Explain the role of cache memory
Cache memory is random access memory called as cpu memory, Typically says that it is a computer micro processor can access more quickly that it an access regular ram.
The role cache memory is is to store program instructions that are frequently re-referenced by software during operation. Fast access to these instructions increases the overall speed of the software program.
5) Explain these terms:
Queuing time: Total time spent by a request during the j th visit to a resource i
Seek time:the time it can takes move one track to other track.
Rotational latency :the amount of time take for desired disk sector of a disk.
6) What is/are the main characteristic(s) of optical storage? Explain how optical storage works.
The optical storage device ,called as compact disc (CD). A CD can store huge amounts of digital informatio on a very small surface that is inexpensive to manufacture. The design that makes this possible is a simple one: The CD surface is a mirror covered with billions of tiny bumps that are arranged in a long, tightly wound spiral. The CD player reads the bumps with a precise laser and interprets the information as bits of data.The spiral of bumps on a CD starts in the center.
The characteristics of optical storage
7) What are the main control lines in memory organization and what is the task associated to each one?
Data lines: Contains actual information that must be moved from one location to another location.
Control lines: indicates which device has per mission use the bus and for what purpose.
Address line: Indicates location that the data should read or written.
Power line:provides electrical power neccesaary
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