Casio Fx 880p Personal Computer

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2. Casio Fx-880p Personal Computer Price In Pakistan
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The Casio FX-850P is a scientific calculator introduced in 1987 and sold until 1999.

Specifications[edit]

• 2 lines with 32 5×7 characters LCD
  • (some indicators and a 5 digit 7-segment display)
• 8 KB RAM (FX-860P: 24 KB, FX-880P: 32 KB)
• CPU: VLSI at 1.228 MHz. Hitachi HD62002A01 (FX-860P, FX880P: HD62002A03)
• Integrated speaker
• Internal slot for memory expansion (32 KB)
• Connector with support for RS232 and Centronics (only level converter for RS232, Centronics needed)
• LCD Driver: 2 x HD66100F
• 2x 3V CR2032 lithium batteries as main power supply
• 1x 3V CR1220 lithium battery as memory backup (RAM power supply)

User's manual at http://www.usersmanualguide.com/casio/calculators/fx-850p

The calculator had a BASIC interpreter, MEMO function, a formula library. The built-in 8 kB memory could be expanded using the optional Casio RP-8 (8 kB) or RP-33 (32 kB) RAM expansion modules. An optional Casio FA-6 interface board provided a cassette tape recorder connector, a Centronics printer connector and an RS-232C port. The calculator could print data and listings on any Centronics printer; printing graphics required the Casio FP-100 plotter-printer.

Later, Casio released the FX-880P, which had 32 kB built-in memory. With a RP-33 expansion module, this model could be upgraded to a total of 64 kB.

The memory layout is:

• 0000-00FF Screen memory
• 0100-01FF Reserved for internal functions
• 0200-02FF INPUT Buffer
• 0300-03FF CALCJMP, VALF Buffer
• 0400-04FF Reserved for IN/OUT/CALC modes (CALC$)
• 0500-074A Reserved for internal functions
• 074B-0752 Reserved for storing the user PASSWORD
• 0753-175A Reserved for internal functions
• 175B-175C Vector pointing to MEMO memory start
• 175D-1FE4 Reserved for internal functions
• 1FE5-1FFF Vectors pointing to P0-P9 memory start
• 2000-9FFF User memory (shared by MEMO and P0-p))
• A000-BFFF Repetition of 0000-1FFF
• C000-DFFF Repetition of 0000-1FFF
• E000-FFFF Repetition of 0000-1FFF

Memory area A000-FFFF was either available as user memory (if expansion was present), or would simply repeat the contents of 0000-1FFF

A few glitches are:

• POKE 1867,0 → would delete any user PASSWORD
• POKE PEEK(8027)+256*PEEK(8028),32 → would recover contents of MEMO after a RESET ALL
• POKE PEEK(8027)+256*PEEK(8028),26 → would hide contents of MEMO, much like a RESET ALL would do, but without losing the programs

The internal function library was programmed in BASIC itself and could be extracted with a BASIC decompiler.

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Any function in the library can be executed from a regular BASIC program by using GOTO 'LIB0:NNNN' where NNNN is the function number (e.g. 5010 for prime factorization). The command GOTO 'LIB0:0400' executes a self-test program.

Characters 252 to 255 were user defined. They could be defined by issuing the command DEF CHR$(n)='HHHHHHHHHH' where n ranges from 252 to 255 and the H's are 10 hexadecimal digits (5 bytes). Every byte defines the pixel pattern for a column. Since a column is 7 pixels high, the least significant bit of every byte is ignored.

The CHR$(26) would activate a different character set for Katakana and Kanji characters. CHR$(27) would deactivate Kanji.

Via a serial cable the calculator could connect to a PC or to another Casio FX-850P, allowing the transfer to MEMO and stored programs.

See also[edit]

References[edit]

1. ^http://www.ledudu.com/pockets.asp?type=64&serie=11

Casio Fx-880p Personal Computer Price In Pakistan

External links[edit]

Casio Fx 795p

• Casio FX-850P on MyCalcDB Database of 1970s and 1980s pocket calculators

Description. Casio FXp, the calculator is in very good condition. It comes with its original box, owner’s manual in Spanish and programs’ chart, everything. Programas Para Casio FX p. Uploaded by. Cecilia Lòpez. Manual Teodolito Cst Berger Dgt10 Esp. Uploaded by. agoch Manual Usuario – Programas. A-PDF MERGER DEMO. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page Page Page Page Page Page Page

Mean Difference Test right Sided Matrix Operation Flowchart Radio Difference Test two-sided Modified Bessel Function In x Mean Difference Test two-sided Population Variance Test Flowchart left Sided Ram Expansion Pack rp-8 8kbrp 32kb Modified Bessel Function Kn x Fx-808p Variance Test two-sided Variance Ratio Test Flowchart right Sided Mean Difference Test left Sided Upper Cumulative Frequency hypergeometric Distribution Hyperbolic And Inverse Fxx-880p Functions Utilization For Preparing Tables Periodic Functions And Symmetric Functions Ratio Interval Estimation Calculations Using Variables Upper Cumulative Frequency binominal Distribution Metric Conversions For Length Expanding File Management Area Of A Trapezoid Fc-880p Point x2 Distribution Error Message Table Surface Area Of A Sphere Data All Clear Variance Ratio Test Flowchart two-sided Ratio Test left-sided Mean Interval Estimation for Unknown Variance Mean Difference Interval Estimation Flowchart Population Variance Test Flowchart two-sided Library Activation Display Numeric Arrays And String Arrays Decimal – Sexagesimal Conversions Ratio Test two-sided Scientific Function Table Tangent Line Equation Scientific Constant Table Bessel Function Jn x Upper Probability Integrals f Distribution Reserved Word List Mean Difference Test Flowchart two-sided Simple Programming Errors Percentage Point Normal Distribution Ordinary Differential Equation runge-kutta Method Population Variance Test Flowchart fx-8800p Sided Physical Lines And Logical Lines Cubic Equation Flowchart Volume Of A Fx–880p