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.123 File Extension

File Type 1Lotus 1-2-3 Spreadsheet

3.9 (53 Votes)
CategorySpreadsheet Files

What is a 123 file?

Spreadsheet created by Lotus 1-2-3, part of IBM Lotus SmartSuite; organizes data in rows and columns; functions can be applied to the data in various cells, which can automatically populate the data in other cells.

More Information

Lotus 1-2-3 was first developed by Lotus Development Corporation, which was bought by IBM in 1995. The "1-2-3" refers to the program's three main capabilities: 1) spreadsheet functions, 2) creating charts and graphs, and 3) basic database operations.

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Programs that open 123 files
Updated 11/6/2013

File Type 2PCB123 Circuit Board Design

DeveloperSunstone Circuits
3.6 (14 Votes)
CategoryCAD Files

.123 File Association 2

Printed circuit board (PCB) layout created with PCB123, a PCB design program; contains a circuit board design, which can include multiple components; supports 2, 4, and 6-layer circuit boards with soldermask and silkscreen options.

More Information

Completed PCB123 designs can be sent to Sunstone Circuits for manufacturing. Assembly quotes are provided within the program.

Programs that open 123 files
Updated 11/12/2009

About 123 Files

Our goal is to help you understand what a file with a *.123 suffix is and how to open it.

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