Joint Test Action Group (JTAG) is the common name for what was later standardized as the IEEE 1149.1 Standard Test Access Port and Boundary-Scan Architecture. It was initially devised for testing printed circuit boards using boundary scan and is still widely used for this application.
Today JTAG is also widely used for IC debug ports. In the embedded processor market, essentially all modern processors implement JTAG when they have enough pins. Embedded systems development relies on debuggers communicating with chips with JTAG to perform operations like single stepping and breakpointing. Digital electronics products such as cell phones or a wireless access point generally have no other debug or test interfaces.
Famous quotes containing the words group, action, joint and/or test:
“If the Russians have gone too far in subjecting the child and his peer group to conformity to a single set of values imposed by the adult society, perhaps we have reached the point of diminishing returns in allowing excessive autonomy and in failing to utilize the constructive potential of the peer group in developing social responsibility and consideration for others.”
—Urie Bronfenbrenner (b. 1917)
“Though with their high wrongs I am struck to the quick,
Yet with my nobler reason gainst my fury
Do I take part. The rarer action is
In virtue than in vengeance.”
—William Shakespeare (15641616)
“Such joint ownership creates a place where mothers can father and fathers can mother. It does not encourage mothers and fathers to compete with one another for first- place parent. Such competition is not especially good for marriage and furthermore drives kids nuts.”
—Kyle D. Pruett (20th century)
“The test of a real comedian is whether you laugh at him before he opens his mouth.”
—George Jean Nathan (18821958)