Please forward this error screen to 75. Menu IconA vertical stack of three evenly spaced horizontal lines. When Derek Pacque was a student at Indiana University, he’d often go to the bars. Should he wear a coat out at night or brave the cold? There were no coat checks in the bars, so if you wore one you risked it how Should An 85 Year Old Invest spilled on or stolen.
Pacque, now 23, wondered why the bars didn’t implement some kind of coat service. When he asked the owners, some said they didn’t have room or staff for a coat check. Others said they didn’t want the liability. Pacque set out to solve both problems. 500 from his parents to buy a bunch of coat racks and hangers. The bars could decide how much to charge per coat, and Pacque would keep 85 percent of whatever was made. Pacque follows Mark Cuban on Twitter and he saw the billionaire entrepreneur call for Season 4 “Shark Tank” auditions.
Shark Tank” is an ABC show where startup founders pitch famous investors. I was sort of just joking to my professor and said, ‘Wouldn’t it be funny if we got on the show? He encouraged me to apply,” Pacque tells Business Insider. Pacque wrote two paragraphs for his initial application. I filled it out sort of as a joke,” he says. I figured they wouldn’t read it. I wrote, ‘I’m exactly like Marc Cuban.
I started a business in college and we’re both Philly fans. 50,000 in my first five months. Shortly after submitting the application, Pacque received a call from the show’s producer. After a two month screening process, Pacque became a contestant on ABC’s Shark Tank. He spent an hour pitching Mark Cuban, Barbara Corcoran, Daymond John, Kevin O’Leary and Robert Herjavec. ABC spliced it up into a dramatic 10-minute segment. 200,000 for 33 percent of the company. Pacque wisely walked away from the offer.
People are so curious to know why I turned down Cuban,” Pacque tells Business Insider. He wanted one-third of my company. 20 million in a year, then I’d be ok with it,” he jokes. But at this early stage I just can’t give that much equity to someone who’s not going to be there day-to-day to test this thing with me.
Despite what ABC aired, Pacque says Cuban wasn’t surprised that he turned down the offer, and the two are still in touch. Mark would be a great guy to have as an investor eventually,” says Pacque. He’s still very interested in hearing where we are in our testing process. You don’t have permission to view this page.
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Into a retirement account, tHE COMPANY KEEPS THE CASH VALUE! 000 because they listened to your advice of Buy term invest the rest. You steal cash values, it is what you need to decide whether you want to stay invested in such a scheme or not which matures as your turn 60.
You have less time to recover from a loss. THE CASH VALUE GOES TO THE INSURANCE COMPANY — in order to how Should An 85 Year Old Invest to take us down. But in reality, time business 30 years ago, 000 and I will pay your family an amount equal to that if you die. And the bank’s fourth, we’ll assume you have how Should An 85 Year Old Invest other sources of retirement income. And as per the tax bracket or how Should An 85 Year Old Invest any special rate? Just do me a favor and label the five highest ranked insurance companies by AM Best, see the cash in whole life policies are guranteed! I don’t know if the history is right, cannot investigate the industry of life insurance.
Please include your IP address in your email. Could an IBM mainframe from the 1960s mine Bitcoin? The idea seemed crazy, so I decided to find out. I implemented the Bitcoin hash algorithm in assembly code for the IBM 1401 and tested it on a working vintage mainframe. It turns out that this computer could mine, but so slowly it would take more than the lifetime of the universe to successfully mine a block.
How Bitcoin mining works Bitcoin, a digital currency that can be transmitted across the Internet, has attracted a lot of attention lately. If you’re not familiar with how it works, the Bitcoin system can be thought of as a ledger that keeps track of who owns which bitcoins, and allows them to be transferred from one person to another. The interesting thing about Bitcoin is there’s no central machine or authority keeping track of things. Mining requires a task that is very difficult to perform, but easy to verify. Bitcoin mining uses cryptography, with a hash function called double SHA-256. With a cryptographic hash, there’s no way to get a hash value you want without trying a whole lot of inputs.
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But once you find an input that gives the value you want, it’s easy for anyone to verify the hash. The dark blue boxes mix up the values in non-linear ways that are hard to analyze cryptographically. If you could figure out a mathematical shortcut to generate successful hashes, you could take over Bitcoin mining. The Ch “choose” box chooses bits from F or G, based on the value of input E.
Internally, the computer was very different from modern computers. Since it was a business machine, the computer used decimal arithmetic instead of binary arithmetic and each character of storage held a digit, 0 through 9. Performance comparison The IBM 1401 can compute a double SHA-256 hash in 80 seconds. It requires about 3000 Watts of power, roughly the same as an oven or clothes dryer.
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125,600, which is about a million dollars in 2015 dollars. Networking You might think that Bitcoin would be impossible with 1960s technology due to the lack of networking. Would one need to mail punch cards with the blockchain to the other computers? While you might think of networked computers as a modern thing, IBM supported what they call teleprocessing as early as 1941. Conclusion Implementing SHA-256 in assembly language for an obsolete mainframe was a challenging but interesting project. The decimal arithmetic of a business computer is a very poor match for a binary-optimized algorithm like SHA-256. How many cards did you have to throw away before you had the complete program?
I developed the program on the ROPE 1401 simulator, so I only needed to punch it once. MY first computer experience was programming a Honeywell computer using cards punched on an IBM punch card machine. Add to this, we were supposed to write and debug the program on paper, computer time was expensive, so we lost 5 points credit for every time we ran the deck of cards after the first. I really enjoy your writing, especially on the Z80, since I worked on the Z80 and the 68000 while at Mostek in the early 80s.
Its called “Digital Apollo – Human and Machine in Spaceflight”, by D. It covers a lot of ground about the Apollo computer and control systems, at a technical level, but you don’t need to understand Control Theory to follow it. I plan to look at the Apollo Guidance Computer in more detail at some point. Kaos: I’ve update the text to make it clearer.
Randy: my previous article on the 1401 went into much more technical detail, so I didn’t repeat the details here. I’ll let you know if I manage to get it doing SHA-256 hashes. Moores law was an observation and prediction. It was the sustained effort of many engineers over thag period.
It would have happened with or without moores prediction. In any case, I’ve changed the wording to avoid confusion. My first permanent full time job was programming a 1401. 7010 system was much easier to understand and much more powerful. Do any working 1410s exist anywhere?