Aristo M76

Calculation	Correct result	M76 Result	Error
`100/18` `40/9` `5.5555550.5555555` `40/9+50/9000` `sqrt(2E6)/1000` `exp(0.005)` `exp(0.999999)` `exp(1.000001)` `exp(100)/1E43` `ln(1E-6)/10` `ln(0.9995)10000` `ln(1.0005)10000` `pow10(0.005)` `pow10(0.99999)` `pow10(1.00001)/10` `pow10(80.1)/1E80` `log10(2E-8)` `log10(0.9995)10000` `log10(1.0005)10000` `log10(1000100)` `2^40 / 1E12` `2^1.443` `1.000001^1E6` `sin(0.01 rad)1000` `sin(1 rad)10` `sin(1.5608 rad)10` `sin(800 rad)10` `tan(0.01 rad)100` `tan(1 rad)` `tan(1.5708 rad)/1E5` `tan(800 rad)` `asin(0.01)100,rad` `asin(0.5)10,rad` `asin(0.999),rad` `asin(0.99999),rad` `atan(0.01)1000,rad` `atan(0.9999)10,rad` `atan(1.0001)10,rad` `atan(1E4),rad` `sin(0.01 deg)10000` `sin(50 deg)10` `sin(89.9 deg)10` `sin(5000 deg)10` `tan(0.01 deg)10000` `tan(50 deg)` `tan(89.99 deg)/1000` `tan(5000 deg)10` `asin(0.01 deg)10` `asin(0.5 deg)/10` `asin(0.999 deg)/10` `asin(0.99999 deg)/10` `atan(0.01 deg)*10` `atan(0.9999 deg)/10` `atan(1.0001 deg)/10` `atan(1E4 deg)/10`	+5.5555555 55555555556 +4.4444444 44444444444 +3.0864191 35802500000 +4.4500000 00000000000 +1.4142135 62373095049 +1.0050125 20859401063 +2.7182791 10178575917 +2.7182845 46742232836 +2.6881171 41816135448 -1.3815510 55796427410 -5.0012504 16822979193 +4.9987504 16510479141 +1.0115794 54259898524 +9.9997697 44141629304 +1.0000230 26116026881 +1.2589254 11794167210 -7.6989700 04336018805 -2.1720154 58642557997 +2.1709297 22302082819 +6.0000434 27276862670 +1.0995116 27776000000 +2.7188564 83813477575 +2.7182804 69319376884 +9.9998333 34166664683 +8.4147098 48078965067 +9.9995003 71413582332 +8.9396964 81970214179 +1.0000333 34666720637 +1.5574077 24654902231 -2.7224180 84073540959 -1.9949001 60845839293 +1.0000166 67416711313 +5.2359877 55982988731 +1.5260712 39626163188 +1.5663241 87113108692 +9.9996666 86665238206 +7.8534816 08973649763 +7.8544816 08975316429 +1.5706963 26795229953 +1.7453292 43133368033 +7.6604444 31189780352 +9.9999847 69132876988 -6.4278760 96865393263 +1.7453292 69716252907 +1.1917535 92594209959 +5.7295778 93130590236 -8.3909963 11772800118 +5.7296734 48571526491 +3.0000000 00000000000 +8.7437441 26687686209 +8.9743765 27084057279 +5.7293869 76834859268 +4.4997135 06778012245 +4.5002864 64574097998 +8.9994270 42206779036	`+5.5555556 +4.4444444 +3.0864191 +4.4500000 +1.4142136 +1.0050125 +2.7182791 +2.7182845` `+2.6881171` -1.3815511 -5.0012600 +4.9987500 +1.0115795 +9.9997697 +1.0000230 +1.2589253 -7.6989700 -2.1720196 +2.1709295 +6.0000434 +1.0995116 +2.7188565 +2.7182818 +9.9998320 +8.4147100 +9.9995000 +8.9396990 +1.0000332 +1.5574077 -2.7233115 -1.9949025 +1.0000166 +5.2359880 +1.5260712 +1.5663242 +9.9996667 +7.8534820 +7.8544820 +1.5706963 +1.7453200 +7.6604440 +9.9999850 -6.4278770 +1.7453200 +1.1917536 +5.7294534 -8.3909970 +5.7296730 +3.0000000 +8.7437441 +8.9743765 +5.7293870 +4.4997135 +4.5002865 +8.9994270	`0 0 0 0 0 0 0 0 0 0 96E-7 4E-7 0 0 0 1E-7 0 41E-7 3E-7 0 0 0 13E-7 13E-7 2E-7 4E-7 25E-7 1E-7 0 8935E-7 23E-7 1E-7 2E-7 0 0 0 4E-7 4E-7 0 92E-7 4E-7 2E-7 9E-7 93E-7 0 1244E-7 7E-7 4E-7 0 0 0 0 0 0 0`

Type, Precision, Input mode	Scientific, 8 BCD digits, exponent ±99, Algebraic. Not overly precise but certainly better than the HP-25.
Programmable	No
Memory	1 register, not permanent
Display	9 digit 7-segment green LED
Special features	Instructions on the back of the calculator The "AW" key displays the full mantissa without exponent
Original Pricing, Production	Unknown, approx. 1977, Dennert & Pape, Hamburg Germany
Links	See Aristo M64
Batteries	2x AA or regular 3V AC power supply minus on center
Dimensions	Length 15cm, Width 7.5cm, Height 2cm
Comment	Different from the M64 the power switch must be in the "1" position to turn the unit on. Calculator forensics value 9.0881531.