S series vs C series

What is the difference between the s series vs the c series? is it true that they have got the m series to?
S series vs C series

What is the difference between the s series vs the c series? is it true that they have got the m series to?
this is REAL URgent. 8051 S series vs C series tick when red plz

i have connected key to port 1.7 of 89s52, with a pull up resistor of 3.3k and 0.1uf capacitro to ground. The key does not work. If i replace 89s52 with 89c52 the key do not functions as desired. ...
this is REAL URgent. 8051 S series vs C series tick when red plz

i have connected key to port 1.7 of 89s52, with a pull up resistor of 3.3k and 0.1uf capacitro to ground. The key does not work. If i replace 89s52 with 89c52 the key do not functions as desired. ...
How to run template code on other board series ?

Hi, I'm new at STM32. I have a board Stm32F303RE and I want to upload a template code I have just downloaded. But this code was buit and uploaded on Stm32F401RE so I couldn't upload this code on my board...