Partial document encryption is an encryption method wherein different parts of a document are separately encrypted. This is often done for efficiency of retrieval to lower the demands on the computer system in general.
DB-25 is part of the D-subminiature (D-Sub) connector plug and socket family for computer and communication devices. DB-25 is a 25-pin electrical connector for serial and parallel computer ports. It is arranged in rows of two with one 13-pin row above another 12-pin row.
The DB-25 connector is used for parallel, small computer system interface (SCSI), or RS-232 serial applications. In parallel applications, DB-25 connectors are known as IEEE-1284 Type A connectors. The male DB-25 is the second-oldest serial computing port, referred to as COM2, and the standard 25-pin D-shell connector for EIA-232 serial communication. Various RS-232 communications devices use the male version. The female DB-25 is primarily used for computer printer ports. Older computers contain only one DB-25 female parallel port.
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