Process blocks Flashcards
(11 cards)
What is a T-Level?
A registered trade mark of the Institute for Apprenticeships and Technical Education
T-LEVELS is a registered trade mark of the Department for Education.
What are the main components of control systems?
Input, process, and output blocks
Control systems consist of different blocks that interact with each other.
What is the function of a process in control systems?
To alter an electrical or electronic signal from the input block
Alterations can include making it high or low, comparing it, turning it into pulses, or counting signals.
Where are processes typically shown in a block diagram?
In the middle, after input blocks and before output blocks
Arrows represent signals flowing in and out of the block.
What is the primary function of timers in control systems?
To keep a signal high or low for a set period of time
The time period can often be adjusted using component values.
What do comparators do in control systems?
They compare a received signal with a reference signal
This comparison determines which signal is bigger or smaller.
What is the function of pulse units in control systems?
To produce a continuous series of digital pulses
The duration for which each pulse is high or low can usually be adjusted.
What do counters do in control systems?
They add up the number of signals or pulses received
This information can be displayed using an output device.
What is the role of latches in control systems?
To keep a signal high or low until they are reset
A reset switch is typically used for resetting.
Fill in the blank: A process can take an electrical or electronic signal from the input block and _______ it in some way.
[alter]
True or False: Counters can display the number of signals received on a digital screen.
True
