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The DC100 tape format and drive was developed by Hewlett-Packard
Hewlett-Packard

The Hewlett-Packard Company , commonly referred to as HP, is a technology corporation headquartered in Palo Alto, California, United States....
 and introduced as a data storage mechanism for the HP9825 programmable calculator. The DC100 tape cartridge was a scaled down version of the DC300 cartridge pioneered by 3M, and represents an early version of what is now referred to as the QIC Mini Cartridge

This format was used in the HP series 80
HP series 80

The Hewlett-Packard series 80 of small scientific desktop computers was introduced in 1979, beginning with the popular model 85 targeted at engineering and control applications....
 calculator/computer systems of the late 1970s and early 1980s.






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The DC100 tape format and drive was developed by Hewlett-Packard
Hewlett-Packard

The Hewlett-Packard Company , commonly referred to as HP, is a technology corporation headquartered in Palo Alto, California, United States....
 and introduced as a data storage mechanism for the HP9825 programmable calculator. The DC100 tape cartridge was a scaled down version of the DC300 cartridge pioneered by 3M, and represents an early version of what is now referred to as the QIC Mini Cartridge

This format was used in the HP series 80
HP series 80

The Hewlett-Packard series 80 of small scientific desktop computers was introduced in 1979, beginning with the popular model 85 targeted at engineering and control applications....
 calculator/computer systems of the late 1970s and early 1980s. It was also used in the HP 2640
HP 2640

The HP 2640A and other HP 264X models were block-mode "smart" and intelligent ASCII standard serial Computer terminal produced by Hewlett Packard using the Intel 8008 and Intel 8080 microprocessors....
 series of computer terminals.

The DC150 cartridge, a variation with slightly higher capacity, was used in Digital Equipment Corporation
Digital Equipment Corporation

Digital Equipment Corporation was a pioneering United States company in the computer industry. It is often referred to within the computing industry as DEC ....
's DECtape II
DECtape

DECtape, originally called Microtape, was a magnetic tape data storage medium used with many Digital Equipment Corporation computers, including the PDP-6, PDP-8, LINC-8, PDP-10, PDP-11, PDP-12, and the PDP-15....
  drives.

Generation DC100 DC200
Release date 1976 
Native capacity (kB) 210 
Max speed (B/s) 650 
Tape length 140 ft (42.7 m) 
Tape width 0.150 inch (3.81 mm) 
Data density 1600 bpi 
Tracks 2 
Coercivity (oersted) 310 


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