Generations
| IBM Model | 726 | 727 | 728 | 729 | 7330 |
|---|---|---|---|---|---|
| Density (chars/in) | 100 | 200 | 248 | 200, 556, 800 | 200, 556 |
| Tape speed (in/s) | 75 | 75 | 75 | 75 (112.5) |
36 |
| Transfer rate (chars/s) | 7,500 | 15,000 | 18,750 | 15,000 41,700 60,000 (22,500 62,500 90,000) |
7,200 20,016 |
| end of record gap | 1 Inch 100 chars 16.67 words |
0.75 Inches 150 chars 25 words |
0.75 Inches 186 chars 31 words |
0.75 Inches 150, 417, 600 chars 25, 69.5, 100 words |
0.75 Inches 150, 417 chars |
| Rewind speed (in/s, avg.) | 75, read backwards | 500 | 500 | ||
| Start time (msec) | 10 | 5 | 5 | ||
| Stop time (msec) | 10 | 5 | 5 | ||
| Max. length of reel (ft) | 1,400 | 2,400 | 2,400 | 2,400 | 2,400 |
| Base Composition | cellulose acetate | PET film or cellulose acetate |
PET film or cellulose acetate |
PET film | PET film |
Read more about this topic: IBM 7 Track
Famous quotes containing the word generations:
“The treasures of Cathay were never found.
In this America, this wilderness
Where the axe echoes with a lonely sound,
The generations labor to possess
And grave by grave we civilize the ground.”
—Louis Simpson (b. 1923)
“In a few generations more, there will probably be no room at all allowed for animals on the earth: no need of them, no toleration of them. An immense agony will have then ceased, but with it there will also have passed away the last smile of the world’s youth.”
—Ouida [Marie Louise De La Ramée] (1839–1908)
“There is a mysterious cycle in human events. To some generations much is given. Of other generations much is expected. This generation of Americans has a rendezvous with destiny.”
—Franklin D. Roosevelt (1882–1945)