The TI-50 (introduced in 1974 for $170) and the HP-21 (introduced in 1975 for $125) both performed the calculations possible on a slide rule for a somewhat more reasonable price. Inexpensive ...
The TI-50 (introduced in 1974 for $170) and the HP-21 (introduced in 1975 for $125) both performed the calculations possible on a slide rule for a somewhat more reasonable price. Inexpensive ...