There are more than 6 but these are the ones that i guess are most common.

input
-keyboard
-mouse

output
-monitor
-printer
-speaker
-usb (flashdrive)

3 0

2 years ago

Suppose we could improve the speed of the CPU in a computer by a factor of 5 (without affecting I/O performance) for 5 times the

Darya [45]

Answer:

Bad Investment

Explanation:

Fraction enhanced = 50% = 0.5 (50% CPU is used all times and rest is waiting for I/O.
Speed up = 5 (By a factor of CPU speed is increased)

Speed up (overall) = $\frac{1}{1-Fraction enhanced + \frac{Fraction enhanced}{Speedup enhanced} }$

Speed up (overall) = $\frac{1}{(1-0.5)+\frac{0.5}{5} } = 1.67$

CPU = 1/3rd the total cost which means rest of the 2/3rd cost remains the same.
New cost of machines = (2/3 * 1) + (1/3 * 5) = 2.33
This means new machine is 2.33 times the cost of the old machine.

$\frac{Cost increase}{Performance increase} = \frac{2.33}{1.67} = 1.3980$

As seen above cost increase is greater then performance increase therefore this is a BAD Investment.

4 0

2 years ago

Which of the following is not a way to build customer loyalty

Snezhnost [94]

Answer: are there option choices? If not I would say

1. not giving back enough change

2. Being rude

3. not giving the right prices

4. Not answering questions

Explanation: hope this helps, have a great day!!

5 0

2 years ago