Computer class questions?

Question

1. Suggest with a reason, the printer that is most suitable for the following application.

(b) An inexpensive printer that can produce interesting colour posters.

2. Unravel the gobbledegook

Mr. Hughes the computer salesman at Computer Universe PLC is explaining about printers to a family who has just bought a PC for home use. They have never owned a computer before and know almost nothing about them.

They are deciding whether to buy a laser printer or an ink-jet but Mr Hughes is not helping with his explanation. Here is what Mr Hughes has said. Can you unravel the gooblegook and put his explanation into words that they will be able to understand?

It all depends on whether your paper output is in monochrome or colour. The ink-jet will produce 2400 dpi and around 10 ppm in colour and 12 ppm in monochrome. It will also produce photo-quality printouts.

The laser printer produces 1200 dpi monochrome and around 14 ppm. If you want a colour laser it is very expensive at around $3000. Cost of ownership is less for a laser printer but you have to outlay the money at the start.

(a) Write down your alternative explanation.

(b) After you have written your simpler explanation produce a list of questions that the salesman should ask to make sure that they buy the most suitable printer.

3. A bathroom designer company uses a computer to help plan new bathrooms. The company sends a salesperson out who measures up the bathroom and makes certain suggestions regarding the arrangement of the toilet, bath, basin, shower, etc. When the client is happy with the arrangement, the salesperson returns to the shop where the bathroom design is transferred to the screen. The client is then sent a three-dimensional diagram of what their bathroom will look like.

(a) Name a device, other than a keyboard, that the designer could use as an input device and say why it is suitable.

(b) A very accurate and high quality printout is needed for the installers to work from. Name an output device that could produce a high quality plan.

(c) What other tasks could the computer perform other than those already mentioned?

Answer 1

Google.com

Answer 2

2

a)

It depends if you want to print in black and white, or colour. The ink-jet will produce a quality of 2400 dots per inch, and prints 10 pages a minute in colour or 12 in black and white. It can do photo quality pictures.

The laser printer prints half the quality (1200 dots per inch) and only in black and white, but prints a faster 14 pages per minute. A colour version would cost around $3000.  Laser printers are cheaper per page but cost a lot of money to begin with, so in the long run they are better.

b)

Will you print in black and white?

Will you print in colour?

Do you need to print documents quickly?

Will you print photos?

Will you use the printer often?

3)

a) The designer could use a mouse to input the design by using a drawing program to design the layout. It is suitable because it is easier to visualise the arrangement and ensure it looks good and there are no mistakes while it is being designed.

b) An inkjet printer?

c) The computer could track his invoice and payment details, it could allow him to view the diagram himself before its printed so that he doesn't have to wait.