Accuracy of data input is important. Let’s discuss the importance of the below methods for inputting data:
· Printed questionnaires: This form of input is best suitable to gather information from large number of people in a relatively short period of time and can be less biased in the interpretation of results. It would focus on specific direction so as to fetch the information rich in content and exact content can be analyzed. The information richness is medium to low. It is quite expensive in operation. Chances for follow-up and probing are limited and follow-up done after original data collection. In this case respondent can be unknown. No clear commitment is done on the subject (Hoffer, 2002).
· Telephone survey: This form of input is best suitable 1where the geographical location is quite apart and the cost of traveling is quite heavy. It is also taken in situations where the information richness is quite low. The time require to fetch such information is inexpensive. There are fewer chances for follow-up and probing. The r1espondents can be unknown in such situations. The respondent can be passive and is completely not involved deeply with the subject.
· Bank checks: It is suitable for situations where information content must be quite reliable and accurate. It is also the fastest procedure for getting the information as they are easily available and the content is quite rich and authentic. It is less expensive form of collection and trustworthy at the same time.
Retail tags: The preferences of the audience can be best known from these types of tags. The audience can be of varied nature and their data is most important in cases where data collection is quite expensive. Interviewing each one of the respondents and then collecting results makes it a quite elaborative process of requirements gathering and assembling.
· Long documents: This form of input takes place when the information is quite large for simple gathering methods. It is precisely used in cases where a lot of information is desirable to make an ultimate decision. The information richness is quite low. The time required is quite low. The chances for follow-up and probing is quite low and saves a lot of time as the document itself is quite elaborative in information depth. There is no clear commitment to the information or data provided.
1. Convenience and quality of output is important. Lets discuss the importance of it in the coming sections:
· Hand held computer: The quality of output is moderate for the information to be gathered is quite urgent and can be done with ease. The time required is quite less in procuring it and it makes sure that it is obtained on demand. The quality of output is negotiable with time factors for its obtainment. It is quite convenient regarding timely access to information.
· Color photograph: It is required when the authentication of the data output is equally important to the exact proof of the output at hand. The quality of output is the best in this case as there is a printed form of the output which stands verifiable.
· Resume: It forms valuable information where all the information is quite vividly displayed and can be found in the same page. This form of output is quite structured in nature and can be located quite distinctly on-demand.
· Memorandum: It forms quite a good communication tool covering in detail the points gathered and this form of output is quite valuable for representing information and content.
· Statistical report: It is a great form of output which is often quite validated and results interpreted in nature. It is a great source of output with regard to information content and validity. It takes a lot of time in procuring information but it stands to be a quality one.
· Company annual report: It does not reveal convenience but contains appropriate information with regard to information richness and authenticity.
2. Different types of storage devices are optimal for different situations. Let’s discuss some of them:
· Hard disk: Usually very efficient for storing large volumes of data but are immovable in nature. So they stand space efficient but not movable in nature. Data access is moderate as I/O devices are slow in fetching data.
· Floppy disk: It is quite portable in nature and can be carried quite efficiently to another place but it is not space efficient, meaning that it is not capable of storing large volumes of information. Data access is slow as input/output devices are always slower in operation.
· RAM: It is the most inexpensive part with regard to size but cannot store data permanently. It is volatile in nature and cannot be carried anywhere. It stores less amount of information with regard to other forms of storage media. The data stored is temporary and not permanent. Data access is fastest as it is stored in primary memory in the cache (Mano, 2002)
· CD-ROM: It is quite inexpensive in nature and offers portability. Data is stored up to a limited extent and speed of access of data is quite slow as I/O devices are slower in operation.
· Tape: It can store large volumes of data and is portable in nature, but data access is slow. It is best in storage capability.
· Jump drive: It is the most inexpensive way to store data in large volumes and can be quite portable and data access is moderate. It can be attributed as an optimum way to store data and access it fast. However it cannot accommodate spaces like the hard disk and the tapes offer.
3. Determining the speed of the computer has many factors such as:
· RAM: The amount of RAM in a computer can have a profound effect on the computers speed. More RAM means the computer can use bigger, more powerful programs and those programs can access bigger data files (Norton, 2002).
· Clock speed: It is a single tick or the time it takes to turn a register either on or off and back again to repeat the same cycle. As the system’s clock speed increases, so does the number of instructions it can carry out each second. Therefore the more fast it is the better off it lies getting the job done (Norton, 2002)
· Data on hard disk: The data on hard disk is quite spread around the entire disk as a large file requires being stored within a lot of sectors. Fetching all those takes time and speed of the computer is determined as the faster it fetches the better-off it is in determining the speed. It is moderate as I/O devices consume time for accessing it.
· Data on CD ROM: The data is fetched quite slowly as the external disks are quite slow in fetching data notwithstanding the speed of the computer. More the speed the difference would be quite negligible as inherently the I/O devices are slower.
· Data on floppy disk: The data requires to be fetched quite slowly as I/O devices are quite slow in operation. The speed of the computer influences its faster access.