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HP Roman-8 is an 8-bit single byte character encoding that is mainly used on HP-UX [2] and many Hewlett-Packard [7] and PCL compatible printers. The name Roman-8 appeared in 1983, [1] but a precursor of the character set was already used by the HP 250 and HP 300 workstations since 1978/1979 as 8-bit Roman Extension. [12] [13] [14] [15]
8-bit HP Roman 8 variant Buzzer HP SIR: 3×1.5 V (4.5 V) N: 1987–1988 HP-41C: HP-28S: HP-42S: 1 MHz Lewis (Saturn core) 8 KB RAM (extensible to 32 KB), 7200? (or 31553) bytes RAM available for user, not flashable 2-line (131×16 pixel) monochrome LCD Classical RPN: Fixed Keystroke programmable, fully merged (FOCAL variant) None 8-bit proprietary
The calculator uses the proprietary HP Nut processor produced in a bulk CMOS process and featured continuous memory, whereby the contents of memory are preserved while the calculator is turned off. [13] Though commonplace now, this was still notable in the early 1980s, and is the origin of the "C" in the model name.
Programming languages that support arbitrary precision computations, either built-in, or in the standard library of the language: Ada: the upcoming Ada 202x revision adds the Ada.Numerics.Big_Numbers.Big_Integers and Ada.Numerics.Big_Numbers.Big_Reals packages to the standard library, providing arbitrary precision integers and real numbers.
In practice, char is usually 8 bits in size and short is usually 16 bits in size (as are their unsigned counterparts). This holds true for platforms as diverse as 1990s SunOS 4 Unix, Microsoft MS-DOS, modern Linux, and Microchip MCC18 for embedded 8-bit PIC microcontrollers. POSIX requires char to be exactly 8 bits in size. [10] [11]
An 8-bit register can store 2 8 different values. The range of integer values that can be stored in 8 bits depends on the integer representation used. With the two most common representations, the range is 0 through 255 (2 8 − 1) for representation as an binary number, and −128 (−1 × 2 7) through 127 (2 7 − 1) for representation as two's complement.
bc first appeared in Version 6 Unix in 1975. It was written by Lorinda Cherry of Bell Labs as a front end to dc, an arbitrary-precision calculator written by Robert Morris and Cherry. dc performed arbitrary-precision computations specified in reverse Polish notation. bc provided a conventional programming-language interface to the same capability via a simple compiler (a single yacc source ...
CHIP-8 is an interpreted programming language, developed by Joseph Weisbecker on his 1802 microprocessor. It was initially used on the COSMAC VIP and Telmac 1800, which were 8-bit microcomputers made in the mid-1970s. CHIP-8 was designed to be easy to program for, as well as using less memory than other programming languages like BASIC. [1]