ENG display mode on HP-15C

[Pekis]

Quote:ENG n does the same thing as SCI n but adds zeroes as needed while adjusting the exponent to be a multiple of 3.

178 in SCI 0 would be: 2. 02

To get that in ENG 0 and have a mantissa between 1 and 1000 (excluded) you need to take 2 off the exponent and insert 2 zeroes before the decimal: 200. 00

The BIG problem with that insertion is that it makes you believe that 200 E0 is the result of rounding to the last digit (coming from 199.5 E0, or 200.4 E0, ...), which is not the case !

And there's no problem with in SCI 0 (2 E2) because 2 comes actually from rounding 1.78 E2 to 0 decimals ...