Computer memory comes packaged on DIMMs, which means 'dual in-line memory module'.
They look like this:
"Chip" would refer to the actual integrated circuit devices themselves, and look like this:
If the DIMMs aren't labeled directly with the memory size, they should at least have visible part numbers on the IC's. You can Google those,
find the data sheet with the memory size, and multiply that by the number of chips on each DIMM. I can't make out the lettering real well
on the above picture, but say the chips are 64M and are only loaded on one side of the circuit board, for a total of 8. You would then have
8 x 64M, or 512M total. Pay no mind to the small chip in the upper corner; it's for other shopkeeping purposes.
You also need to verify you are using a compatible memory type for the motherboard in your PC, or damage can occur. Different types have
different voltage requirements and speeds. If the parts you bought were made anytime in recent years, it's highly unlikely they will even fit
in your Win95 machine. It may be worth having a tech at a local shop take a look at these if you're not real familiar with them.