DC100
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The DC100 tape format and drive was developed by Hewlett-Packard as a data storage mechanism for the HP9825 programmable calculator.
This format was used in the HP series 80 calculator/computer systems of the late 1970's and early 1980's.
Tape width is 0.150 inches, roughly 3.8 mm.
| Generation | DC100 | DC200 |
|---|---|---|
| Release Date | 1976 (?) | |
| Native Capacity (KB) | 210 | |
| Max Speed (Bytes/sec) | 650 | |
| Tape Length | 140 feet (42.7 m) | |
| Tape Thickness | ||
| Data Density | 1600 bpi | |
| Tracks | 2 | |
| Coercivity (oersted) | 310 |
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| Magnetic tape data storage formats | ||
|---|---|---|
| Linear | Helical-Scan | |
| Three Quarter Inch (~19 mm) |
||
| Half Inch (12.65 mm) |
UNISERVO (1951) - IBM 7 Track (1952) - IBM 9 Track (1964) - IBM 3480 (1984) - DLT (1984) - IBM 3590 (1995) - T9840 (1998) - T9940 (2000) - LTO Ultrium (2000) - T10000 (2006) |
Redwood SD-3 (1995) - DTF (19xx) - SAIT (2003) |
| Eight Millimeter (8 mm) |
Travan (1995) - IBM 3570 MP (1997) |
|
| Quarter Inch (6.35 mm) |
||
| Four Millimeter (3.8 mm) |
DC100 (1976) - DECtapeII (1979) |
DDS/DAT (1989) |
| One Eighth Inch (3.18 mm) |
KC Standard, Compact Cassette (1975) - Datassette (1977) |
|
| Stringy (1.58 - 1.9 mm) |
Exatron Stringy Floppy (1979) - ZX Microdrive (1983) - Rotronics Wafadrive (1984) |
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