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All ICT doubts here!

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J.Darren:

--- Quote from: ~VIN1094~ on May 12, 2010, 06:03:54 pm --- @ JHeroXHappy

i really appreciate tht u corrected me .. :)

thank u .. =)


--- End quote ---
No probs. Best of luck :)

First Language English and ICT on Friday, dang ...

Vin:

I kno right .. studyin ICT is soo boring ..  :-\

J.Darren:

--- Quote from: ~VIN1094~ on May 12, 2010, 06:14:52 pm ---I kno right .. studyin ICT is soo boring ..  :-\

--- End quote ---
Somewhat, well I mean the key to success is to drill on the past paper Qs ... Gosh I lost two marks in Paper 2 for changing 0 and - 1 to Yes and No prior to importing the database :(

7ooD:

i have this repetitive question i need answer which i should directly write in the exam i dnt need explanation  big_smile

it is in may/june 2007 question 7 it says

7 A school in a cold country would like to grow tropical fruit. They want to use a computer
controlled greenhouse for this purpose.
(a) Name three sensors that they would need to use to measure the soil and growing
conditions.

i said
temperature sensor
light sensor
humidity sensor
my questions are

(b) Describe how three output devices would be used to control the growing conditions.
1
2
3

(c) Describe the computer processing which would be required to maintain the necessary
growing conditions.

J.Darren:
7 A school in a cold country would like to grow tropical fruit. They want to use a computer
controlled greenhouse for this purpose.
(a) Name three sensors that they would need to use to measure the soil and growing
conditions.

i said
temperature sensor
light sensor
humidity sensor
my questions are

(b) Describe how three output devices would be used to control the growing conditions.
1 motor for shutting window - light sensor
2 water sprinkler - moisture sensor (notice that it does not have to be corresponding with the ans in part a)
3 air conditioner - temperature sensor

(c) Describe the computer processing which would be required to maintain the necessary
growing conditions.

Conditional :

- Microprocessor constantly monitors the analogue signal.
- Analogue signal is compared with preset value at real time.

Any three will do:

- If temperature is higher than preset value, turn on the fan.
- If temperature is higher than preset value, turn on the air conditioner.
- If temperature is lower than preset value, turn off the air conditioner.
- If light intensity is higher than preset value, shut the window.
- If light intensity is lower than preset value, open the window.
- If moisture level is higher than preset value, turn on the water sprinkler.
- If moisture level is lower than preset value, turn off the water sprinkler.

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