HAL does not exist. it is a pun on IBM with a one letter shift. a very elementary foirm of cipher. H-I A-B L-M hence IBM. INternational Business Machines.
Marvin Minsky gave an excellent (and quite amusing) lecture entitled Where is HAL? in 2001. He concluded that HAL is a long way off, and explains the state of Artificial Intelligence research in 2001. Not much appears to have changed in the eleven years since.
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(Search the internet for Marvin Minsky's "Where Is HAL?" lecture. It had been online for a long while, maybe it is still available somewhere.)
Of course, in normal today's computing terms, HAL also stands for hardware abstraction layer. This can mean both the general architectural concept and a specific implementation. The Windows operating systems' hardware abstraction layer is selected at Windows installation time, and some versions are said to struggle with severe hardware changes (such as changing from a single-CPU to a multi-CPU board). The operating system manufacturer's technical support line will know best how to solve problems arising from such changes.
Hal Baylor's birth name is Hal Brittan.
Hal Havins's birth name is Hal Roth Havins.
Hal Needham's birth name is Hal Brett Needham.
Dave deactivated HAL 9000
Ranger Hal was created in 1957.
HAL .
Hal Lamar went by Hal.
Hal Newhouser went by Prince Hal.
Hal Chase went by Prince Hal.
Hal Price went by "Happy" Hal Price.
Hal Baylor's birth name is Hal Brittan.
I will rebuild that.
Hal Lindes's birth name is Lindes, Hal Andrew.
Hal Rothman's birth name is Hal Karl Rothman.
Hal Kemp's birth name is James Hal Kemp.
Hal Frederick's birth name is Hal Christopher Frederick.
Hal Beckett's birth name is Foxton Beckett, Hal.