Well the data would be on the floppy disks if you have them or if you have floppy disks you can copy the images to the floppy disk from old computer. Then getting your data off the disks you can simply buy a USB Floppy Drive connect it to any modern computer to USB 2.0 or 3.0 port and access your floppies on the A: drive to access pictures.
Biggest thing to do before you buy a USB Floppy drive is place a disk into the drive on old computer and see if you can access teh data there. then create a new file and see if it opens ok. If this works then your floppy drive isnt too dirty and still works. It would be a shame to buy a USB Floppy drive and not have an original floppy drive that is healthy to copy data to floppies. So knowing that the old floppy drive is healthy is important. * However if you have a stack of old floppies and want access to the data on these then it might be worth it to buy the USB Floppy drive anyways even if the internal floppy drive is junk.
If this computer is running Windows 98 or newer OS you might be able to copy them to a USB stick and not deal with the floppy drive all together, however best results for a thumb drive is Windows 2000 or XP or newer OS for flash drive support. Some flash drives support Win 98 but most require newer OS for driver support.
Here is a Win 98 system that was set up for USB drive support:
https://www.instructables.com/id/How-to-Use-USB-Drives-With-Windows-98/I haven't tried it with 98 myself but have used USB Flash Drives on Windows 2000 SP4 and XP successfully.
If its Windows 95 or older as well as if you want fewest headaches in getting your data here are 2 options:
#1 Remove the hard drive from that computer and get a empty external hard drive enclosure for it to install the drive into that enclosure making an external USB Hard drive. *You will need a USB to IDE type enclosure. If its a laptop it would be a 2.5" enclosure and if its a desktop a 3.5"
#2 If you dont want to remove the hard drive then its a process of booting the old system and copying the pictures to the floppy disk(s) and by use of purchasing a USB Floppy drive being able to read the floppy disks with a modern computer with this drive. They run about $25 or so USD.