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Designing a microprocessor from scratch
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![Designing a Microprocessor from Scratch](https://i2.wp.com/microcontrollertips.com/wp-content/uploads/2014/10/ALU.jpg)
![74181 ALU design on Altera MAX II CPLD](https://i2.wp.com/farm6.staticflickr.com/5672/23261826353_09493f010c_z_d.jpg)
74181 ALU design on Altera MAX II CPLD
![Explaining The Operation Of The 74181 ALU | Hackaday](https://i2.wp.com/hackaday.com/wp-content/uploads/2017/03/74181-featured.jpg?w=800)
Explaining The Operation Of The 74181 ALU | Hackaday
![a The 74181 4-bit ALU has a single template with four instances; b the](https://i2.wp.com/www.researchgate.net/profile/Rajesh_Gupta17/publication/3786174/figure/download/fig8/AS:652189781458946@1532505569100/a-The-74181-4-bit-ALU-has-a-single-template-with-four-instances-b-the-74L85-magnitude.png)
a The 74181 4-bit ALU has a single template with four instances; b the
![Inside the 74181 ALU chip: die photos and reverse engineering](https://i2.wp.com/lh3.googleusercontent.com/-5I_R_2u34W8/WG_PYGmfGWI/AAAAAAAA_Gc/HJnMRn6KfVYUJzcbQAmsPAH-Ea2ef9wOwCHM/w9999/not-and-diagram.png)
Inside the 74181 ALU chip: die photos and reverse engineering
![74181 - 74181 - JapaneseClass.jp](https://i2.wp.com/tams.informatik.uni-hamburg.de/applets/hades/webdemos/20-arithmetic/50-74181/demo-74182-ALU-CLA.gif)
74181 - 74181 - JapaneseClass.jp
![Inside the vintage 74181 ALU chip: how it works and why it's so strange](https://i2.wp.com/lh3.googleusercontent.com/-sYiWtSWaFFc/WM6nnYKnJHI/AAAAAAABA7k/h_M3CFVl5JsPq-WSp8cYPBDHssnPVRGUwCHM/w9999/pg-circuit.jpg)
Inside the vintage 74181 ALU chip: how it works and why it's so strange
![16 Bit ALU Tutorial with 74181 & 74182 - YouTube](https://i.ytimg.com/vi/xODcIY1Hg5w/maxresdefault.jpg)
16 Bit ALU Tutorial with 74181 & 74182 - YouTube
![Inside the 74181 ALU chip: die photos and reverse engineering](https://i2.wp.com/lh3.googleusercontent.com/-5ajD9q0Byb4/WHQODBYfEbI/AAAAAAAA_IQ/6Zx8Y5OST_guxwDwm9IPDTTa5MBmG9-8wCHM/w9999/xor-diagram2.png)
Inside the 74181 ALU chip: die photos and reverse engineering
![TTL](https://i2.wp.com/semtronics.net/shop/resources/image/18/ab/3.gif)
TTL
![74xx181 help needed - Page 1](https://i2.wp.com/lh3.googleusercontent.com/-3cuntUaxmUE/WM6nndVpFeI/AAAAAAABA7k/_nglbusMSLEmoNv6Q0oQTe9scAsDL5JGgCHM/w9999/datasheet-74181-operations.png)
74xx181 help needed - Page 1