The Motorola 68881 and Motorola 68882 are floating-point units (FPUs) used in some computer systems in conjunction with Motorola's 32-bit 68020 or 68030 microprocessors. These coprocessors are external chips, designed before floating point math became standard on CPUs. The Motorola 68881 was introduced in 1984. The 68882 is a higher performance version produced later. (Wikipedia).
1-Bit Breadboard Computer P.02 – 8-bit Program Counter (using 74HC163)
Time for another 1-bit breadboard computer episode! In this episode we build an 8-bit program counter using two 74HC163 4-bit binary counter chips. Come join us on Discord and Twitter! Discord: https://discord.gg/p7UsfHD Twitter: https://twitter.com/UsagiElectric Thanks for watching!
From playlist 1-Bit Breadboard Computer
1-Bit Breadboard Computer P.04 – The MC14500 and Running our First Program
Time for another 1-bit breadboard computer episode, and this one is a good one! We get the MC14500 in place, as well as a 74HC4051 for input, and then we program and execute our first proper program! Come join us on Discord and Twitter! Discord: https://discord.gg/p7UsfHD Twitter: https
From playlist 1-Bit Breadboard Computer
1-Bit Breadboard Computer P.01 – The MC14500 and 555 Clock Circuit
In this episode, we start a new series that will run alongside our vacuum tube series where we start building a 1-bit breadboard computer based around the MC14500 1-bit ICU. First things first though, we gotta build a clock for it, so we break out the 555s and get started on that! Check o
From playlist 1-Bit Breadboard Computer
1-Bit Breadboard Computer P.03 – Program Memory (using AS6C6264)
Time for another 1-bit breadboard computer episode! In this episode we build program memory using an AS6C6264 8k x 8-bit SRAM chip. Come join us on Discord and Twitter! Discord: https://discord.gg/p7UsfHD Twitter: https://twitter.com/UsagiElectric Thanks for watching!
From playlist 1-Bit Breadboard Computer
Driving the Ipod Nano 6 LCD Part 1 : http://www.youtube.com/watch?v=7TedIzmguP0&list=UUcs0ZkP_as4PpHDhFcmCHyA Also related : http://www.youtube.com/watch?v=9GqfZMcrAFY&list=UUcs0ZkP_as4PpHDhFcmCHyA&index=4 FPGA board is LCMXO2-7000HE-B-EVN (Note this was originally called LCMXO2-1200 but
From playlist Ipod Nano LCD series
T4D #59 - Fluke fix 287 / 289, Fluke CNX 3000...Bitcoin!
------------------------------ Click "Show more" ------------------------------------------- Feedback and a firmware fix from Fluke for the Fluke 287 / 289. Some new kit has arrived: Fluke CNX 3000, Fluke 805 vibration meter, CEM DT-337 milliamp clamp meter, Agilent U1177A Bluetooth data
From playlist Tip or Thought for the Day!
EEVblog #1308 - 1970's Intel MCS-85 8085 Design Kit!
Will a 1970's era Intel 8085 design kit power up after 40 years? A look at the Intel MCS-85 System Design Kit and some vintage computer and processor history. Subscribe on Library: https://lbry.tv/@eevblog:7 Forum: https://www.eevblog.com/forum/blog/eevblog-1308-1970s-intel-mcs-85-8085-d
From playlist Vintage Computers
Can You Crack This Code? What Is 128√e980 = ?
Here's a mysterious puzzle you could share with a special person. If ∑8dh = loan, and ∓8rΠ = torii, then what is 128√e980 = ? I usually mention sources. The 128√e980 is a meme whose origin I cannot trace. The other parts of the puzzle I devised. My blog post for this video: https://wp.me
From playlist Viral Math Memes
Brief History of MOTOROLA 1930 - 1997 (auto radios, TV, Cell phones, microprocessors)
A brief history of MOTOROLA from 1930 to about 1997, originally produced for the “Motorola Museum of Electronics,” which opened in 1991, but unfortunately ceased operating years ago. Motorola is well known for radios, televisions, cellular phones and many other electronic devices. This
From playlist Vintage Television & Radio Technology, film restoration, film preservation, scanning and digitization
22C3: Towards the first Free Software GSM Phone
Speaker: Harald Welte Reverse Engineering the Motorola EZX (A768,A780,E680) series of Linux-based GSM phones This presentation describes the progress of hacking and extending the Motorola series of Linux based Smartphones, with the ultimate goal to replace all proprietary applications wi
From playlist 22C3: Private Investigations
EEVblog #243 - Vintage Brick Mobile Phone Teardown
What's inside an almost 20 year old analog mobile phone? Dave tears down a 1993/1994 vintage Motorola Ultra Sleek 9660 "Dynatac" phone and compares it with a Nokia 3310 from 2000
From playlist Product Reviews & Teardowns
EEVblog #1021 - Retro Radio Shack TRS-80 Color Computer
Dave tears down and takes a look at the classic 1980 Tandy / Radio Shack TRS-80 Colour Computer. Includes hacking a composite video output circuit to get it working on a modern HDMI computer monitor. Service Manual With Schematics: http://www.colorcomputerarchive.com/coco/Documents/Manual
From playlist Vintage Computers
MIT 15.401 Finance Theory I, Fall 2008 View the complete course: http://ocw.mit.edu/15-401F08 Instructor: Andrew Lo License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 15.401 Finance Theory I, Fall 2008
Excel Magic Trick 686: Fill Column & Concatenate With LOOKUP Last Word Expandable Range Trick
Download Excel Start File https://people.highline.edu/mgirvin/YouTubeExcelIsFun/EMT686-697.xlsx See how to create a new column of values joining a value from the 1st column that contains company names and blanks and a second column with Product name. Aladin from the Mr Excel Message Boar
From playlist Excel Series: Magic Tricks (4th 200 videos)
CERIAS Security: Security issues within embedded software development 1/5
Clip 1/5 Speaker: Ron Buskey · Motorola Software development processes and tools used for small communication devices have changed significantly over the years. Some of these practices and processes have resulted in improvements in quality and time to market for their target products,
From playlist The CERIAS Security Seminars 2007
Vacuum Tube Computer P.10 – Adding Skip to the Instruction Register
Our instruction register from last time was pretty awesome, but in reality it’s still awfully simple. So, this time, we add a little more functionality to it in the form of skipping instructions. So, let’s take a look at how the Motorola chip handles skipping and see if we can implement th
From playlist Vacuum Tube Computer
Vacuum Tube Computer P.22 – Processor Finished!
Y’all, we did it! About a year ago, we set out to build a vacuum tube replica of the Motorola MC14500, and not only did we straight up achieve that goal, we actually improved upon Motorola’s design. We have a fully functioning, 1-bit, vacuum tube processor! There’s still a long ways to go
From playlist Vacuum Tube Computer
DEFCON 15: The Next Wireless Frontier - TV White Spaces
Speaker: Doug Mohney Editor, VON Magazine More unlicensed bandwidth from TV!?! A long-term push to free up more wireless spectrum is expected to come to fruition this year as the FCC will open up unused TV channels - dubbed "white spaces" - for unlicensed broadband use this fall, with ful
From playlist DEFCON 15
DEFCON 16: Taking Back your Cellphone
Speaker: Alexander Lash, Security Researcher This presentation will cover a variety of topics of interest to anyone on a cellphone network in the US. I'm going to cover how to use your own backends for MMS and WAP access, unlock Bluetooth tethering, and circumvent some of the more obnoxio
From playlist DEFCON 16
Vacuum Tube Computer P.11 – Building a 4-bit Decoder for the Instruction Register
Our instruction register is slowly getting more and more capable as we build further and further. Today, we want to take the 4-bit binary stored in the register, and decode it into 16 individual control lines, which means we’re building a decoder! Also, check out the episode where we reve
From playlist Vacuum Tube Computer