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PLC ( Programmable Logical Controller )
PLC stand for programmable logical controller. PLC is an industrial computer used to monitor inputs and depending upon their make decisions based on its program to control its outputs to automate a machine or a process. In another way a PLC may be called a digitally operating electronic apparatus because it is basically used a programmable memory for the internal storage of instructions by implementing specific functions such as logic sequencing. Timing counting and arithmetic to control various types of machines. They are used in many industries such as oil refineries manufacturing lines conveyor system etc.
Write short notes of the following. a) Microprocessor b) Modes of data transfer. c) I/O processor d) Associative memory e) Software and Hardware interrupt
For Carry Flag RC (Return of Carry) and RNC ( Return on no Carry) Instruction RC returns from the subroutine to the calling program if carry flag is et (CY= 1). The
why the primary bushing of 7970/13.8 distribution transformer blown up when connected wye on a 13.8 kv source?
What is the size of ports in 8255? Port-A : 8-bits Port-CU : 4-bits Port-B : 8-bits Port-CL : 4-bits
KPI for Second Stage Implementation These KPIs deal along with the quality of the relationship among a supplier and a user (customer). They are significant to potential custom
Q. For the 4-bit D/A converter of Figure with V ref =-5 V, determine the range of analog output voltage and the smallest increment. Ans. The binary input range is from 0
Simbulation
The one line diagram of a simple power system is shown below. The data of the system are given in the table below. (a) Draw the impedance diagram of the system and mark all impe
Explain the TEST instruction. TEST: The TEST instruction executes the AND operation. The difference is as the AND instruction changes the destination operand, whereas the TEST
How address and data lines are demultiplexed in 8085? AD0-AD7 lines are multiplexed and the lower half of address A0-A7 is available only during T1 of the machine cycle. This
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