A Brief History of Digital Data Storage 

Punch Cards

1920s-1950s

70 bytes

 

Magnetic Drum Memory

1950s- 1960s

10-17 kilobytes

 

Magnetic Tape

1950s - present

3 megabytes to 5 terabytes (modern day)

IBM Hard Disk Drive

1950s-1970s

5MB

Floppy Disks

1971-1990s

up to 1.2 megabytes

 

Laser Disc

1972 - early 1990s

 

Compact Disk

1990s - present

700 megabytes

DVD

1990s - present

8.5 gigabytes

Memory Stick

2000 - present

8 gb - 64 gib

 

SD Cards

2000- present

2 gb - 128 gb

Cloud Storage

present

unlimited