Systems and Control- inputs ,process and outputs

1) public address system - input ?
2)table lamp - process ?
3) street lamp - input ?
4)burgular alam - process?
5)doorbell-output-doorbell sounds (ding dong is this right?)
6)car windscreen - input-?
7)refrigerater- output- cold air ( is this right ?)
8)calculator- input?
9)kitchen timer - process?
10)automatic night light - output - light comes on at set time ( is this right ?)
thanks for you help

I will do a couple. You need to do your own thinking.

1)public address system
input:voice message
process: amplification, and distribution to speakers
output: loud message at selected sites.

7) refrigerator: Input: temperature sensor
Process: When internal temp is above preset temp, turn on refergerator compressor
Output: Cold box with temp below a preset.

10) auto night light.
Input: light sensor sensiing light
Process: if ambient light is below threshold, turn on light.
Output: light on or off

thanks that's great! they were the main ones i was stuck on.thanks again

ok what is the burglar system ?

1) The input for a public address system is an audio signal or a sound source, such as a microphone or a pre-recorded message.

To use a public address system, you would connect the sound source (input) to the system, allowing it to capture the audio signal. This could involve plugging in a microphone or connecting a device via Bluetooth or a cable.

2) The process for a table lamp is the conversion of electrical energy into light. The lamp receives electrical energy as the input and uses it to power a light bulb, which emits light as the output.

3) The input for a street lamp is electrical power from a power source. This power is typically supplied through a direct connection or a power line. The street lamp uses this electrical power to produce light as the output.

4) The process of a burglar alarm involves detecting unauthorized entry or unusual activity and triggering an alarm signal. The input for a burglar alarm includes sensors, such as motion sensors, door/window sensors, or glass-break sensors. When these sensors detect an intrusion or suspicious activity, they send a signal to the alarm system, which then triggers the alarm as the output.

5) The output for a doorbell is the sound it produces when someone presses the button. The sound can vary depending on the specific doorbell model, but "ding dong" is a common sound associated with doorbells.

6) The input for a car windscreen (windshield) would be the visual information from the surroundings. The driver sees the road, other vehicles, and objects through the windscreen, which allows them to navigate and make decisions while driving.

7) The output for a refrigerator is cold air. The refrigerator takes in electrical power as the input, which allows it to operate its cooling system. The cooling system extracts heat from the inside of the refrigerator, resulting in the output of cold air.

8) The input for a calculator includes numerical data or mathematical operations entered by a user. This can involve pressing buttons or typing in the desired calculations.

9) The process of a kitchen timer involves measuring the passage of time and alerting the user when a predetermined time has elapsed. The input for a kitchen timer is the initial time set by the user, and the timer processes this input by counting down the seconds until reaching zero and then triggering a sound or alarm as the output.

10) The output for an automatic night light is the light coming on at a pre-set time. The night light has an internal clock or a light sensor that detects the ambient light levels. Based on the configured settings, the night light automatically turns on or off so that it provides light during the desired dark hours.