If SMS/SCCM Client is installed we will get SMS Agent host (ccmexec.exe ) service will be installed all the related information log file is ccmexec.log file if client installed it will come in Control Panel 
if the client OS version is 32 bit then you can find the applets in the control panel directly, if it is 64 bit OS then you will get in 32-bit Control Panel items (The reason is sccm is a 32 bit application) also client will be installed in windowsccmsetup for client installation and for client logs in 64 located in 
64 bit client log files location screenshot is below 
