Vintage National Cash Register NCR Computer Logic Chip Tie Bar & Pen

Description

Vintage National Cash Register NCR Computer Logic Chip Tie Bar and Pen
NCR MOS-LSI Logic Chip Tie Bar and original description on paper
Pen with NCR Logo and original box.
This tie bar was a promotional item given out by NCR Microelectronics which features one of their Logic chips in white
ceramic DIP packaging
with gold frame & leads.
This chip was used in the NCR C-280 and C-270 remote terminals which connected to NCR's Century series of mainframe retail and financial computer & data processing systems
. It has the die exposed for viewing and is custom marked with the newly re-designed (1971) NCR logo in red.
The tie clasp is attached to a forty pin ceramic package with a MOS-LSI logic array chip located in the center of the surface. This device is typical of those used in the C-280 and C-270 Systems. Tiny wire bonds less than the thickness of a human hair can be seen by tilting the package slowly. On the surface of the MOS-LSI chip, there are typically 2000 transistors which are equivalent to the number of active components contained in 300 transistor radios.
Condition:
These items are used and show minimal signs of use an
d wear.   The pen has not been tested.  These items are being sold as is.  See photos for condition.