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HP has never made another calculator specifically for programmers, [2] but has incorporated many of the HP-16C's functions in later scientific and graphing calculators, for example the HP-42S (1988) and its successors. Like many other vintage HP calculators, the HP-16C is now highly sought-after by collectors. [14]
Two's complement is the most common method of representing signed (positive, negative, and zero) integers on computers, [1] and more generally, fixed point binary values. Two's complement uses the binary digit with the greatest value as the sign to indicate whether the binary number is positive or negative; when the most significant bit is 1 the number is signed as negative and when the most ...
hex 2-input NAND driver 20 DM74AS1804: 74x1805 6 hex 2-input NOR driver 20 DM74AS1805: 74x1808 6 hex 2-input AND driver 20 DM74AS1808: 74x1811 1 FM, MFM, and DM encoder / decoder, data rates up to 20 MHz 24 74LS1811: 74x1812 1 SerDes with ECC and CRC, data rates up to 30 MHz three-state 48 74LS1812: 74x1821 1 10-bit bus interface flip-flops ...
XOR/table Paul Hsieh's SuperFastHash [1] 32 bits Buzhash: variable XOR/table Fowler–Noll–Vo hash function (FNV Hash) 32, 64, 128, 256, 512, or 1024 bits xor/product or product/XOR Jenkins hash function: 32 or 64 bits XOR/addition Bernstein's hash djb2 [2] 32 or 64 bits shift/add or mult/add or shift/add/xor or mult/xor PJW hash / Elf Hash ...
The bitwise XOR may be used to invert selected bits in a register (also called toggle or flip). Any bit may be toggled by XORing it with 1. For example, given the bit pattern 0010 (decimal 2) the second and fourth bits may be toggled by a bitwise XOR with a bit pattern containing 1 in the second and fourth positions:
where b represents the multiplicative inverse, is the bitwise XOR operator, is a left bitwise circular shift, and the constant 63 16 = 01100011 2 is given in hexadecimal. An equivalent formulation of the affine transformation is
The calculator can be set to display values in binary, octal, or hexadecimal form, as well as the default decimal. When a non-decimal base is selected, calculation results are truncated to integers. Regardless of which display base is set, non-decimal numbers must be entered with a suffix indicating their base, which involves three or more ...
The base-2 numeral system is a positional notation with a radix of 2.Each digit is referred to as a bit, or binary digit.Because of its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used by almost all modern computers and computer-based devices, as a preferred system of use, over various other human techniques of communication, because ...