Instruction/ maintenance manual of the product CK57 Aurora
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1 AUROR A OPER A TING M ANUAL For use with A X- 582 T win-line scientific calcul ator . Printed in China 92202 50 Removing and Rep lacing the Calc ulator’s Cover Always sli de the keyboard end of the unit into the cover fi rst. Never slide the display end of the unit i nto the cover .
2 1 format. ■ Decimal Point an d Separator S ymbols You can use the displ ay setup (Disp) screen to specify the symbol s you want for the decimal point and 3-digi t separator. T o change the deci mal point and separator symbol setting, press the M ODE MODE MODE MO DE 1 ► .
3 53 – 6 = 47 53 - 6 M+ - ） 45×2 = 90 45 × 2 SHIFT M- (Total) - 11 RCL M ■ Variables ● There are nine variabl es (A through F , M, X and Y), which can be used to store data, constants, results, and ot her values. ● Use the foll owing operati on to delete data assigned to a parti cular variable: 0 SHIFT STO A .
4 ● Example: T o calculate x σn - 1, x σn, x , n, ∑x and∑x 2 for the followi ng data : 55, 54, 51, 55, 53, 53, 54, 52. In the SD Mode: SHIFT CLR 1 (Scl ) = (Stat clear) 55 DT Each time you press DT to r egister your input, t he number of data input up to that point is indicated o n the display (n value).
5 118 48.0 Perform quadratic regressi on to determine the regressi on formula terms for the data nearby. Next, use the regressi on formula to estimate the values for y ˆ (estimated value of y) for xi= 16 and x ˆ (estimated value of x) for yi=20 In the REG Mode: MODE 3 ► 3 （ Q uad ） SHIFT CLR 1 （ Scl ） = (Stat clear) 29 , 1.
An important point after buying a device Aurora CK57 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Aurora CK57 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Aurora CK57 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Aurora CK57 you will learn all the available features of the product, as well as information on its operation. The information that you get Aurora CK57 will certainly help you make a decision on the purchase.
If you already are a holder of Aurora CK57, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Aurora CK57.
However, one of the most important roles played by the user manual is to help in solving problems with Aurora CK57. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Aurora CK57 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
