Wang 100-Series Desktop Calculator
A whole range of machines made up the 100-series offerings, with a total of 12 different models, spread across three different areas of mathemetics disciplines; Business, Statistics, and Scientific. The business-oriented calculators provide basic math functions (add, subtract, multiply, divide), while the statistical calculators provide one-key square root, reciprocal, integer, and squaring functions. The scientific machines add absolute value, exponential and logarithm (base e) and instant Pi recall. Optional modules provide for extended statistics functions (constant multiplication and division, along with various summation functions), and trigonometry (Sin, Cos, ArcSin and ArcTan, Degrees<->Radians and power function) can be added to the machines to provide additional capabilities.
Half of the models come with a printer, and the other half provide a Nixie tube display for presenting information to the user. The various models come with either six or 14 memory registers, which offer full four function direct arithmetic capabilities. Machines with six memory registers can be field upgraded to 14 registers via replacement of RAM memory devices. Field upgrades also allowed addition of higher-level math functions to lower-capability machines.
Like the 200 and 300-series calculators, the machines are programmable via punched cards. The optional Model 184 Master Card Reader provides 60 steps of programming. For an additional 60 steps of program capability, the Model 185 Slave card reader can be added. For the Nixie-display machines which lack a built-in printer, the optional Model 180 external printer can be connected to provide hardcopy output for calculations performed.
See the museum's exhibit on the Wang 144 for more information on these machines.