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In January 1990, Applied Systems released TAM 4.0 for a
beta-test (i.e., during which agencies used the software in a
working environment to identify problems not discovered during
in-house testing). In September 1990, Applied Systems began to
develop TAM 4.1, a series for large agencies. In 1991, Applied
Systems beta-tested TAM 4.1. Throughout 1992, Applied Systems
debugged TAM 4.1 and worked on TAM 5.0. In October 1992, Applied
Systems decided to make TAM 4.1 its main product and adjust it
for small agencies by deactivating certain features.
Applied Systems made 190 modifications to the TAM module in
converting Series 4.0 to 5.0. During the years in issue, the
modifications to the TAM module included the following.
1. Rounding Numbers
Applied Systems’ clients identified rounding errors in the
calculation of money amounts. Programmers traced the errors to
extra decimal places in the compiler program.
2. Locking Transactions
Applied Systems programmed the TAM module for “locking”
(i.e., allowing more than one user at a time to conduct
transactions with a particular file).
3. Expanding Representation
Programmers expanded the representation on each byte of
memory from 9 to 32 objects (e.g., agencies, branches, or
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Last modified: May 25, 2011