PA 551, Professor Stipak
PA 551, Professor Stipak
Calculator for Use in PA551/PA552
Although spreadsheet and statistical programs work well for a wide range of purposes, it is still handy to have a handheld electronic calculator. For PA551/PA552 you should have one. What kind should you get?
• Inexpensive (say about $10 or so), but not the absolute cheapest (such as free).
• Passes the following test: enter the number one, then divide by three, then multiply by three. You should get the answer 1, not the answer .99999… Only the very cheapest calculators today (like free ones) will fail this test.
• Algabraic/arithmetic entry, not RPN entry. The first entry method is like you are used to, just enter “1, +, 3, =” and you will see the answer “4”. RPN calculators have an “enter” key, and they are harder for most people to get used to. Casio and TI traditionally made algebraic-entry calculators, and HP traditionally made RPN.
• You must have a square root key.
• Having parentheses keys is handy.
• I prefer calculators that have store and recall keys (e.g. STO/RCL) for entering and recalling entries in memory, as opposed to calculators using the other approach of having keys for adding to what is stored in memory (e.g. MEM+) and recalling the stored sum from memory.
• I like having a “1/x” key.
• Calculators with fancy built-in statistical and programming capabilities are probably a liability for typical students in PA551/PA552.
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