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VisiCalc ("visible calculator") [1] is the first spreadsheet computer program for personal computers, [2] originally released for the Apple II by VisiCorp on October 17, 1979. [1] [3] It is considered the killer application for the Apple II, [4] turning the microcomputer from a hobby for computer enthusiasts into a serious business tool, and then prompting IBM to introduce the IBM PC two years ...
A perpetual calendar is a calendar valid for many years, usually designed to look up the day of the week for a given date in the past or future. For the Gregorian and Julian calendars, a perpetual calendar typically consists of one of three general variations: Fourteen one-year calendars, plus a table to show which one-year calendar is to be ...
The issue spans the changeover; the date heading reads: "From Tuesday September 1, O.S. to Saturday September 16, N.S. 1752". [ 1] Old Style ( O.S.) and New Style ( N.S.) indicate dating systems before and after a calendar change, respectively. Usually, they refer to the change from the Julian calendar to the Gregorian calendar as enacted in ...
Cron also features a column on the right side of the main window. When you click on an event, you get details about the event in that column. From there, you can change the time and date, add a ...
Today from Second Gear Software is a lightweight calendar app for the Mac that focuses on simplicity and speed. It's not an alternative to iCal, but rather a tidy front end. With some ...
The idea of calendar subscriptions is simple: store a calendar event database somewhere online, and then provide a link in a common format for calendar programs such as iCal to access.
Cloud and on-line spreadsheets. Collabora Online Calc — Enterprise-ready LibreOffice. [ 1] EtherCalc [ 2] (successor to SocialCalc, which is based on wikiCalc) LibreOffice Online Calc. ONLYOFFICE - Community Server Edition. Sheetster – "Community Edition" is available under the AGPL. Simple Spreadsheet.
Fantastical Premium costs $5 per month. If you commit to an annual subscription, it instead costs $3.33 per month. There's also a free 14-day trial if you want to check out all the app's more ...
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