Streptococcal pharyngitis or strep throat is caused by group A beta-hemolytic streptococcus (GAS). It is the most common bacterial cause of cases of pharyngitis (15â30%). Common symptoms include fever, sore throat, and large lymph nodes. It is a contagious infection, spread by close contact with an infected individual.A definitive diagnosis is made based on the results of a throat culture.Antibiotics are useful to both prevent complications and speed recovery.ommon symptoms include fever, sore throat, and large lymph nodes. It is a contagious infection, spread by close contact with an infected individual. A definitive diagnosis is made based on the results of a throat culture. Antibiotics are useful to both prevent complications and speed recovery.
A programmable logic controller (PLC), or programmable controller is an industrial digital computer which has been ruggedised and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability control and ease of programming and process fault diagnosis.
Also in the interest of how PLCs work, you may like to see the PLC History or the Smallest PLC pages on this website. Or maybe you would like to register for our self teach PLC programming course which is in the making.he CPU-Central Processing Unit. How PLCs work is down to the CPU, the CPU is the PLC part which is the brain of the whole PLC. This module typically lives in the slot beside the power supply or is incorporated with a power supply.