Sharp PC-1403

The Sharp PC-1403 was a small scientific calculator and pocket computer manufactured by Sharp. It was the successor of the Sharp PC-1401, and had better display, more RAM and better system software.

Technical specifications

• CPU: Hitachi SC61860 (8-bit CMOS) 768 kHz
• Memory: 8 KB RAM (6863 bytes available), 72 KB ROM; 32 KB RAM in PC-1403H model
• Display: Monochrome LCD 1 line with 24 5×7 characters
• Power: 6 V DC - 2× CR2032, 0.03 W
• Connector (11 pins) for external devices
• Integrated speaker (4 kHz beep only)
• Contrast adjustment wheel
• Software: Simple BASIC interpreter; calculator mode
• Matrix calculations

Manufacturing started in 1986.

Calculator

Calculations could be performed in two modes CALulator and RUN. In the former the PC-1403 would behave like a normal scientific calculator at the time with formulas entered in algebraic logic or in RUN mode BASIC statements could be entered for immediate execution and print out. The later was similar to the Direct algebraic logic employed by modern calculators.

Programming

The programming model employed was unstructured BASIC for which the PC-1403 distinguished between RUN and PROgram mode. The later being used to enter and edit program and the former being used to execute them.

Programming example

Here is a sample program that computes the factorial of an integer number from 2 to 69. It can be called by pressing DEF F in run mode. The program is 66 bytes long.

10 "F"                                 ''allows to start the program with DEF F
20 INPUT "N=?";N                       ''Ask for n
30 LET F=1                             ''Set start value if F to 1
40 FOR I=1 TO N STEP 1                 ''counts I from 1 to N
50 LET F=F*I                           ''calculates F=F*I
60 NEXT I                              ''repeats loop from line 40
70 PRINT USING "##";N;"!="; USING ;F   ''print result - i.E. 5!=120
80 END                                 ''end off program

Sharp Corporation Divisions and subsidiaries Current iDeep Solutions Corporation Recurrent Energy Sharp Electronics Corporation Sharp Manufacturing Systems Corporation Sharp Solar Takaya Defunct Optonica1 Shareholdings Pioneer Corporation (14%) Products Calculators Sharp EL-8 Sharp EL-500W series Sharp EL-5120 Sharp QT-8B Sharp QT-8D Computers Notebooks Sharp PC-5000 Sharp Actius RD3D PCs Sharp MZ Sharp X1 (Sharp X1 games) Sharp X68000 (Sharp X68000 games MDX) Pocket and handheld Sharp PC-1211 Sharp PC-1251 Sharp PC-1350 Sharp PC-1401 Sharp PC-1403 Sharp PC-1450 Sharp PC-1500 Sharp PC-1600 Sharp PC-E220 Sharp PC-E500S Sharp Wizard Sharp Zaurus Mobile phones Sharp GX15 Sharp GX25 Sharp GX29 Sharp GX33 J-SH04 Sharp SH906i Sharp SX862 Sharp Aquos Crystal Televisions and displays Sharp Aquos C1 NES TV Quattron SF-1 SNES TV Other Famicom Titler Twin Famicom Sharp Viewcam VL-Z800U People Tokuji Hayakawa Places Abenobashi Terminal Building Tower Abeno-ku Blue Man Group Sharp Aquos Theatre Yaita 1Now integrated into other Sharp divisions or business groupings Category Commons