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Showing posts from March, 2019

Bookshelf Classic: Programmers At Work

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Where did that idea come from? How difficult was it to bring the idea into reality? What does it feel like to develop a major program?

Susan Lammers interviewed 19 programmers along these lines to capture and understand what spawned the microcomputer industry.  With such an eclectic group (click on cover image), Lammers touched on the popular platforms, languages, and applications of the day, including CP/M, BASIC, and VisiCalc.  She also explored the boundaries where programming met music, mathematics, and gaming.

One of my favorite quotes in the book came from the  conversation with Bill Gates where he talked about "technical inversions":

GATES: The old rule used to be that a manager of a programmer was always a better programmer, and there were no what we called "technical inversions," where a programmer works for somebody who doesn't know how to program. We still follow that philosophy: At certain levels we've got business managers, but we don't have…

Limit Up Limit Down Calculator in Beta

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Limit Up Limit Down Calculator in Beta Luldcalc is an iOS app I wrote to calculate price bands in accordance to the rules put forth by the LULD Committee: http://www.luldplan.com/index.html

In addition to being a basic calculator, there are buttons to select tier 1 or tier 2 stocks, and also buttons to double the bands for market open and close.
For Testers A public beta is now available at:

https://testflight.apple.com/join/gWOth57S

The link will introduce you to Apple's TestFlight app which is used to gain access to the beta version of LuldCalc.  You'll need an iPhone running iOS 8 or later.

Install the TestFlight app and you'll find an icon that looks like this:



Open the TestFlight app, and you will be presented with a screen to redeem LuldCalc:



Have fun and let me know your thoughts. Privacy Policy It is more than rude to sell information about you without your permission.  We don't do that and we'll find another way to make a living.