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what is essential hardware component of a greenhouse temprature control
it is the inverse of normal systems,take an electrical system electrical system--------analogue system L--------C V-------I R-------G
This is a brief description of an analogue computerAn analog computer is a form of computer that uses the continuously changeable aspects of physical phenomena such as electrical,mechanical, or hydraulic quantities to model the problem being solved. In contrast, digital computers represent varying quantities symbolically, as their numerical values change. As an analog computer does not use discrete values, but rather continuous values, processes cannot be reliably repeated with exact equivalence, as they can with Turing machines. Analog computers do not suffer from the quantization noise inherent in digital computers, but are limited instead by analog noise.Analog computers were widely used in scientific and industrial applications where digital computers of the time lacked sufficient performance. Analog computers can have a very wide range of complexity. Slide rules and nomographs are the simplest, while naval gunfire control computers and large hybrid digital/analog computers were among the most complicated.[1] Systems for process control and protective relaysused analog computation to perform control and protective functions.Source: Wikipedia
Eventually, all digital television signals become analogue. In the case of an LCD television, each crystal shutter operates in an analogue fashion to control the brightness of the pixel. In a CRT television, the conversion happens further back in the signal path. Most CRT televisions don't have digital inputs so it is normal for the signal to be converted back to analogue before it reaches the television, using composite video or analogue component signals for example. If the television has a digital input, the signal will be changed to analogue before being processed and amplified ready to arrive at the tube.
B. R. Wilkins has written: 'Testing digital circuits' -- subject(s): Digital electronics, Testing 'Analogue and iterative methods in computation, simulation, and control' -- subject(s): Electronic analog computers
In the computers control panel
what is essential hardware component of a greenhouse temprature control
global warming
KYOTO Protocol
Computers are used in stock control to monitor the daily changes on the stock market. Computers are essential in participating in the stock exchange online.
You could have a runaway greenhouse effect, where positive feedbacks increase so rapidly that the temperature rises too fast and too high to control. Venus has a runaway greenhouse effect, and the oceans have boiled dry and the ground temperature is about 464 °C (867°F).
Analogue - In audio terms, this means that the audio signals will be stored, reproduced, or transmitted physically on or in something (i.e. vinyl records).Mixing Desk - A mixing desk is where an audio engineer controls and edits several audio signals simultaneously for recordation or transmission.Therefore, an Analogue Mixing Desk is used to control and edit analogue audio signals simultaneously for recordation or transmission.