Explain what situations are appropriate for the following devices and explain why? Hard disk- A hard disk gives direct access to stored information. The best situation appropriate for using a hard disk would be used to handle inventory control. The user would be able to go directly to the necessary information in a timely fashion without having to physically count the inventory to find the results. Floppy disk- A floppy disk is a small removable media storage device. The best situation appropriate for using a floppy disk would be when you need to transport document from one computer to another.

This will allow you to store the necessary information onto the floppy disk and then insert the floppy into another computer to bring up the necessary contents. RAM- RAM (random access memory) is where information can be temporarily stored. The best situation appropriate for using RAM is when someone is typing up a document to be printed out and need this information for a short period; he/she could use RAM. This information can be erased after the user has done the necessary task with the document and could use that memory for other documents of its sort.CD ROM- CD ROM is where data is recorded and can not be modified; this disk is considered to be a “read only” disk. The best situation for using CD ROM is when you would like to share information with other people; however, would not like those particular people to modify the document.

They would be able to read the information only and nothing can be changed on this document. Tape- A tape is a common form of storage in which the information is recorded on a magnetic strip. The best situation appropriate for tape would be to use it a secondary storage to back up any software in case of a disaster.Explain the role of each of the following in determining the speed of a computer: RAM- RAM is memory found in computers and other devices such as printers.

RAM is the main memory to available programs. The computer can control only data in its main memory; therefore, every program you perform and every file you access must be copied from a storage device into main memory. Clock speed- Each CPU produces a series of electronic pulses at a predetermined rate, which affects machine cycle time. Each instruction takes at least the same amount of time as the intervals between pulses.The shorter the intervals between pulses, the faster each instruction can be executed.

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The clock speed for personal computers is in the multiple GHz range. Data on a hard disk – Data on a hard disk is potent utility providing disk images files for backup or duplication purposes. The image files can be stored in a variety of places such as removable disk. Using data on a hard disk you can completely and rapidly restore computer system after heavy data loss such as a virus attack or hardware failure. This information can also be deployed when you need to setup many identical computers with the same information.

Data on CD ROM-Data on a CD ROM (Compact Disc {Read-only-memory}) can usually only read audio CDs. It is possible to produce both audio and data CDs which can be viewed on a computer. The standard CD ROM holds 650 or 700 MiB (mebibyte) of data. It is popular for distribution of software applications.

Data on floppy disk- Data on a floppy disk is stored onto a thin, circular magnetic film. Computer data appears as magnetic bits placed on a flat magnetic surface. Floppy disk can store up to 360 KB (kilobytes) of data.