Datexx DS-700 Correcting Overflow Errors, CALCULATION EXAMPLES MIXED 2 x 8 - 3 + 5 x 4 - 6 x 7 =

hierarchy first, press [ = ] to perform the higher hierarchy calculation, then enter the lower hierarchy calculation to get an accurate result.

Example: (10 + 5 ) ÷ 3 = 5

Incorrect: 10 [+] 5 [÷] 3 = 11.6667

Correct: 10 [+] 5 [=] 15 [÷] 3 = 5

With this method, calculations can be performed in the proper order.

CORRECTING INCORRECT ENTRIES If you press the wrong function key ( +, --, x, or ÷ ), just press the correct function after pressing the wrong one. The calculator preforms the last function pressed.

Example: If you press the 5 + -- x 5 =, the displayed result will be 25 as [ x ] was the last function key pressed.

If you press the wrong number key, press [ ON/C ] once to clear the last entry, or twice to clear all entries made. Entries made with the memory keys are not affected.

CORRECTING OVERFLOW ERRORS

If a calculated result exceeds the dis- play ability or the memory capacity, the display stops and E appears in the display. Press [ ON/C ] to resume calculating.

The range of calculated results and memory capacity are within the range of 1 x 10 -99 to 9.9999999 x 10 99

An error also occurs if you try to divide a number by 0 or extract the square root of a negative number.

CALCULATION EXAMPLES MIXED 2 x 8 - ( 3 + 5 ) x 4 - 6 x 7 = 20

4.3 - 1.8

Press						Display	Memory
							Contents
3	[+]	5	[=]	[x] 4	[= ] [M+]	M 32	32
6	[x]	7	[+/– ] [=]		[M+]	M–42	–10
4.3 [–]			1.8	[=]		M2.5	–10
[⎟	] [RM]		[=]	[2ndF] [1/x]		M–4	–10
[+/–]		[x-->M]				M 4	4
2	[x]	8	[=] [M+]			M 16	20
[RM]						M 20	20

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