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Sharp PC-E500S

  (Redirected from Sharp PC-E550)

The Sharp PC-E500S was a 1995 pocket computer by Sharp Corporation and was the successor to the 1989 PC-E500 model, featuring a 2.304 MHz CMOS CPU.

Sharp PC-E500S
Sharp PC-E500S, 5.jpg
Sharp PC-E500S in RUN mode (BASIC programming)
Type Pocket computer
Introduced 1995
Discontinued 2003
Predecessor Sharp PC-E500
Calculator
Entry mode Infix, BASIC,
Precision 10 (single precision)
20 (double precision; not available in CAL, MATRIX, and STAT modes)
Display type LCD dot-matrix
Display size 4×40 characters
CPU
Processor Sharp SC62015
Frequency 2.304 MHz
Programming
Programming language(s) BASIC
User memory 32 KB (built-in), custom-expandable to 256 KB
Firmware memory 256 KB
Interfaces
Ports

1 vendor-specific (serial/printer/disk drive)

1 TTL-level serial communications port
Other
Power supply 4× AAA
1× CR2016
Power consumption 0.09 W
Weight 340 g (including lid and batteries)
Dimensions 22×10.45×1.9 cm (lid closed)
Main menu with BASIC, CAL, MATRIX, STAT, and ENG mode selection
Diagnostic menu in ROM
PC-E500S with closed lid
Bottom side

Contents

DescriptionEdit

It was slightly wider, and the keys are slightly larger than the previous model. The display had more contrast, and the keyboard cover is a (removable) hinged lid (clamshell) instead of plastic slipcase. There were also four additional BASIC commands. Programs written on PC-E500 were executable on the PC-E500S.

It came with 32 KB of RAM which could be upgraded to 96 KB using memory expansion cards. The monochrome LCD had 240×32 pixels which could display four lines with 40 characters per line as well as graphics. The 256 KB system ROM the contained the BIOS, a diagnostic suite,[1] and the BASIC interpreter used to program the device.

An algebraic calculation system was included. The Algebraic Expression Reserve (AER) memory: Frequently used formulas or constants could be stored in memory and recalled for repeated use. The PC-E500 series also performed as a scientific calculator when switched into 'CAL' mode.

It also included an X<>Y exchange key for working with complex numbers and polar to rectangular conversions.

ApplicationsEdit

In addition things like amino acids and the periodic table of elements were available. These built-in programs were accessed through a menu system and special function keys. There was also a built-in menu editor to add new software to the menus or indeed replace some built-in software or formulas.

Operating modesEdit

  • BASIC (programming and execution)
  • CAL (scientific calculator)
  • MATRIX (matrices calculations)
  • STAT (statistics)
  • ENG (engineering)

AccuracyEdit

  • 10 digits (mantissa) + 2 digits (exponent) in single-precision mode.
  • 20 digits (mantissa) + 2 digits (exponent) in double-precision mode.
  • In the CAL, MATRIX and STAT modes, only the single precision mode can be used.

Memory expansionEdit

The Sharp PC-E500 series could store data and programs on memory expansion cards as well as the main RAM. Six cards were available:

  • CE-210M: 2 KB
  • CE-211M: 4 KB
  • CE-212M: 8 KB
  • CE-2H16M: 16 KB
  • CE-2H32M: 32 KB
  • CE-2H64M: 64 KB

These cards used a CR1616 lithium battery for memory backup.

The memory configuration was software-switchable from the command-line. The RAM card could be appended to the system memory, replace the system memory or act as a separate space to be used as a RAM drive (F:). The main memory could also be partitioned off to a RAM drive (E:).

PeripheralsEdit

[1]

  • CE-126P (de): Thermal printer & cassette interface.
  • CE-140F: 2.5-inch pocket floppy drive.
  • CE-130T: RS-232 adaptor level converter.
  • CE-135T: RS-232 adaptor level converter. (Macintosh)
  • CE-515: 4-color X/Y plotter printer

The PC-E500S had a weight of 340 g (with batteries) and was powered by four AAA batteries. It could, given its power consumption of 0.09 W, be used for about 70 hours on a charge.[2]

VariantsEdit

  • PC-E500 (English): 32 KB, engineer software, double precision, slipcase, rubber keys, black, 1988/1989
  • PC-E500 (Japanese): 32 KB, engineer software, double precision, Kanji, slipcase, rubber keys, black, 1988[3]
  • PC-E500PJ / PC-E500-BL (Japanese): 32 KB, engineer software, game "HEAVY METAL mini" (by CRISIS Software) preloaded into RAM, double precision, Kanji, slipcase, rubber keys, blue, 1990, limited special edition by Pokecom Journal (PJ)[4]
  • PC-E500S (English): 32 KB, engineer software, double precision, high contrast display, clamshell, plastic keys, black, 1995[5]
  • PC-E550 (Japanese): 64 KB, engineer software, double precision, Kanji, slipcase, rubber keys, white, 1990[6]
  • PC-E650 (Japanese): 64 KB, engineer software, double precision, structured BASIC, Kanji, clamshell, plastic keys, black, 1993[7]
  • PC-1480U (Japanese): 32 KB, no engineer software, "coop uni" label, double precision, Kanji, slipcase, rubber keys, black, 1988[8]
  • PC-1490U (Japanese): 32 KB, no engineer software, "coop uni" label, double precision, Kanji, slipcase, rubber keys, black, 1990[9]
  • PC-1490UII (Japanese): 64 KB, no engineer software, "UNIV. TOOL" label, double precision, Kanji, slipcase, rubber keys?, black, 1991[10][11]
  • PC-U6000 (Japanese): 64 KB, no engineer software, "UNIV. TOOL" label, double precision, Kanji, clamshell, plastic keys, black, 1993[12][13]

See alsoEdit

ReferencesEdit