Already there were hand calculators with thouands of words of memory space, all made from the chips grown in orbit.

However, modern hand calculators and personal computers have reduced this "advantage" to nothing.

Half an hour later, using an ordinary hand calculator, Caitlin added up the amounts indicated on the display screens so far.

But we do not get a total, and this writer had to use a hand calculator to figure it out.

After working through the numbers with slide rules and hand calculators, they determined the Neutron cross section of the poison, which turned out to be xenon-135.

Uses less power than a hand calculator and weighs less-under two hundred grams.

This was exploited in the days of hand calculators to expedite the construction of map projections.

He/she could use a hand calculator to do exercises and/or games involving multiplication 'facts'.

The chairman read the numbers to an accountant who was using a hand calculator.

She was punching away on her hand calculator when he walked into her office.