The blog post discusses the performance issues encountered with the Tyan GT62D-B7106 server, specifically regarding the CPUs not reaching their expected clock frequencies. The author identifies a power limit of around 180 W for bo...
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The text explains how to write shell scripts in C++ by using a POSIX shell script with embedded C++ source code. It also discusses the compile time overhead and how to mitigate it using a compiler cache. The author also addresses ...
The text discusses the malfunction of a microwave oven, specifically the issue of it turning on by itself. The author explains that the problem is caused by a failing LED display, which leads the microcontroller to detect the door...
0Calculator
2023-08-13 •
The author discusses the challenges of finding a calculator that can work with both decimal and hexadecimal numbers conveniently and the limitations of existing calculators. They then describe the calculator they wrote, which allo...
0Lenovo Thunderbolt Dock Type 40AC
2023-08-07 •
The text discusses the Lenovo Thunderbolt Dock Type 40AC, which requires a 135W AC adapter for USB Power Delivery charging. The author modified a 90W adapter to appear as 135W to make it work. The laptop now charges through the do...
0Depstech DW49 Webcam — Teardown and Measurements
2022-07-06 •
The Depstech DW49 is a low-cost webcam that claims to record 4K 30 fps video. The author disassembled the webcam to verify the accuracy of the specifications claimed by Depstech. The webcam uses a lower-resolution image sensor and...
0Capacitors in storage can get the plague too
2022-02-22 •
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0Portland Black Lives Matter Mural
2020-08-16 •
During the protests following George Floyd's killing, 'Black Lives Matter' murals were painted on streets in various cities, including Portland, Oregon. The mural on Edison Street includes brief snippets of history related to the ...
0Elections 2019: Who is really getting a tax cut?
2019-10-19 •
The article discusses the personal income tax proposals from four Canadian political parties (Conservative, Liberal, NDP, and People’s Party) and how the benefit or cost is distributed among people at varying income levels. It pro...
The text discusses the physical geometry of modern hard disk drives, including the arrangement of data on platters, tracks, and sectors. It describes the evolution of hard drives, the challenges in characterizing disk drive geomet...
0A Cardboard Haswell Box
2018-12-03 •
The post is about a cardboard computer built in 2015, serving as part of a simulation cluster during the author's Ph.D. work. It contains detailed information about the components, design goals, and modifications made to the compu...
0The Microarchitecture Behind Meltdown
2018-05-18 •
The text discusses the microarchitecture behind the Meltdown vulnerability, explaining the root cause of the vulnerability, how it works, and how it can be tested. It also presents a methodology for testing the behavior of the pro...