Answer all the questions.
Which of the following are examples of an input device? (select all correct options)
Which of the following are examples of an output device? (select all correct options)
Match the five output devices with five descriptions.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
2D cutter | arrow_right_alt | Droplets of ink are propelled onto paper. |
LED screen | arrow_right_alt | Flat panel display that uses the light modulating properties of liquid crystals. |
LCD screen | arrow_right_alt | 2D High-powered laser that uses the X-Y plane cutter. |
Laser printer | arrow_right_alt | Flat panel display that uses an array of light emitting diodes as pixels. |
Inkjet printer | arrow_right_alt | Electrically charged powdered ink is transferred onto paper. |
a) Name three buses used in the von Neumann architecture. [3]
b) Describe the function of each named bus. [3]
c) Describe how bus width and clock speed can affect computer performance. [3]
Which is an example of an embedded system?
How do embedded systems differ from general-purpose computers?
Embedded systems are commonly used in consumer electronics like microwaves and washing machines.
What is the main function of a CPU?
What unit measures CPU speed?
What is a benefit of a multi-core CPU?
A company is developing a new games console. The console games will be stored on a ROM chip once the program to run the new game has been fully tested and developed.
i Give two advantages of putting the game’s program on a ROM chip. [2]
ii The manufacturers are also using RAM chips on the internal circuit board. Why have they done this? [1]
iii The games console will have four USB ports. Apart from the need to attach games controllers, give reasons why USB ports are incorporated. [2]
During development of the games console in question 12, the plastic parts are made by a 3D printer. Give two reasons why the manufacturer would use 3D printers.
An air conditioning unit in a car is being controlled by a microprocessor and a number of sensors.
a) Describe the main differences between control and monitoring of a process. [2]
b) Describe how the sensors and microprocessor would be used to control the air conditioning unit in the car. Name at least two different sensors that might be used and explain the role of positive feedback in your description. [6]
Which of these are characteristics of RAM? (select all correct options)
What are features of ROM? (select all correct options)
Which aspects differentiate RAM from ROM? (select all correct options)
Describe three differences between MAC addresses and IP addresses.
Explain each of the following terms:
a) Network interface card (NIC)
b) Router
A zoo has an information point.
» Visitors use a menu to select information about animals.
» The menu includes 500 different animals.
» The information is provided only using high definition video with an audio track.
a) State one input device that could be used for the information point. [1]
b) The output is shown on a monitor. State one other output device that could be used for the information point. [1]
c) The video files are stored at the information point. State one secondary storage device that could be used. [1]
d) The zoo decides to introduce Quick Response codes in different places in the zoo. These provide further information about the animals. Describe how customers obtain the information from the Quick Response codes. [4]
Convert -88 into a binary number using the two’s complement format.
Explain or show your working.
Convert 88 to a hexadecimal number format.
Name the three components of data packets and the kind of information contained in each.