HP 33S Scientific Calculator (F2216A) by Hewlett Packard $50.99
Powerful/advanced pocket-size programmable scientific calculator. 32K user memory. Letter+4 program line labels. Cursor keys to navigate menus. Works in both RPN and algebraic modes. Features: keystroke programming, solve function, stats one and two variable, base-n function, 27 independent memories, trig, polar-rectang.

HP Calculators HP33S Scientific Calculator F2216A by HP $100.58
Accuracy, functionality, dependability: Scientific projects require these vital attributes for success. The pocket-sized HP 33s scientific programmable calculator delivers them - and more - with features that are ideal for engineers, surveyors, college students, scientists and medical professionals. A powerful, programmable scientific calculator at an attractive price. One of the few calculators...

Casio FX-115ES Advanced Scientific Calculator with 2-Line Natural Textbook Display by Casio Inc. $20.99
Casio Adv. Scientific Calc

Casio FX-115MS Plus Scientific Calculator by Casio $26.95
CASIO SCIENTIFIC

Sharp EL-W516B Scientific Calculator with WriteView (Black) by Sharp HO $24.99
The ELW516B scientific calculator by Sharp performs over 535 scientific functions and has seven different modes. It features WriteView technology which displays formulas as they are written in textbooks eliminating any confusion on how to enter each formula into the calculator. It has a large 4-line, 12-digit LCD display, ensuring that whole formulas will be visible. The playback feature allows...

Texas Instruments TI36X Solar Scientific Calculator by Texas Instruments $28.95
Perfect for advanced algebra, trigonometry, computer science, chemistry and statistics. One- and two-variable statistics include results for linear regression and trend line analysis. Adds, subtracts, multiplies and divides fractions entered in traditional numerator/denominator format. Three memories, 10 English/metric conversions and eight physical constants. ANYLITE solar power operates even in...