![]() In spite of these, and others, VisiCalc continued to outsell them all. Lotus 1-2-3 Release 2.3 for DOS User's Guide the Functions and Macros Guide is next to it. ![]() The Lotus Development Corporation was founded by Mitchell Kapor, a friend of the developers of VisiCalc. 1-2-3 was originally written by Jonathan Sachs, who had written two spreadsheet programs previously while working at Concentric Data Systems, Inc. To aid its growth both in the UK and possibly elsewhere, Lotus 1-2-3 became the very first computer software to use television consumer advertising. His ability to develop his product to appeal to non-technical users was one secret to its rapid success. Unlike many technologists, Kapor relied on focus group feedback to make his user instructions more user-friendly. One example: the instructions that came with the floppy disc read: "Remove the protective cover and insert disc into computer." A few focus group participants tried to rip-off the stiff plastic envelope of disc carrier. Kapor's recognition that techno-speak instructions needed to be translated to normative English was a strong contributor to the product's popularity. Lotus 1-2-3 was released on 26 January 1983, and immediately overtook Visicalc in sales. Unlike Microsoft Multiplan, it stayed very close to the model of VisiCalc, including the "A1" letter and number cell notation, and slash-menu structure. It was cleanly programmed, relatively bug-free, gained speed from being written completely in x86 assembly language (this remained the case for all DOS versions until 3.0, when Lotus switched to C ) and wrote directly to video memory rather than use the slow DOS and/or BIOS text output functions. #Word menu 2.2 and masterwriter software alternatives windows.#Word menu 2.2 and masterwriter software alternatives mac. ![]()
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