Hello dear,
.
Yes, obviously PCM even means

• Physics
• Computer science
• Mathematics

.
PCM especially made for only 3 subject,viz.,

• Physics
• Chemistry
• Mathematics

.
As time changed and generation developed they even added different streams to PCM,which varies from class to class and course to course like,

• Physics
• Chemistry
• Mathematics
• English
• Physical education
• Computer science
• Hindi

hope you understood it clearly without any confusions.
Thank you

Dear aspirant, 

Hope you are doing well . As per your query PCM  in any school or college will always mean Physics, Chemistry and Maths. It is never computer science though there are consequences. In sanskrithi school of engineering it is also the same. Hope this helps you. Thank you.

Hi Priyanka,

No, the Acronym PCM is used for Physics Chemistry and Mathematics. As for engineering these three subjects are must to form the basis of concepts and and tools used to complete a BTech degreee. In Sanskrithi School of Engineering also it means the same. Computer Science is never a must have to pursue engineering in any college.

Good Luck !!

Hello aspirant,
I am here for helping you...
as per your doubt I am clarifying you that PCM does not cognate with physics, computer science and mathematics,
While it designate with physics, chemistry and mathematics  for an aspirant who is going to pursue engineering, he/she should passed his class 10+2 with PCM (physics, chemistry and mathematics).
if you didn't study computer science in your 11th and 12th class so it's not a concern topic because when you are going for engineering they will teach you computer science from starting...
I hope it will be beneficial for you...
For more queries you can upvote my answer and can ask in the comment section below..
Best of luck...