DEC2BIN function  This article describes the formula syntax and
usage of the DEC2BIN function (function: A prewritten formula
that takes a value or values, performs an operation, and returns
a value or values. Use functions to simplify and shorten
formulas on a worksheet, especially those that perform lengthy
or complex calculations.) in Microsoft Excel.   Converts a
decimal number to binary.   DEC2BIN(number, [places])     •
Number    Required. The decimal integer you want to convert. If
number is negative, valid place values are ignored and DEC2BIN
returns a 10-character (10-bit) binary number in which the most
significant bit is the sign bit. The remaining 9 bits are
magnitude bits. Negative numbers are represented using
two's-complement notation.   • Places    Optional. The number of
characters to use. If places is omitted, DEC2BIN uses the
minimum number of characters necessary. Places is useful for
padding the return value with leading 0s (zeros).     • If
number < -512 or if number > 511, DEC2BIN retur