Kalman Filter

卡爾曼濾波器的原理和應用

What is Kalman Filter

• 卡爾曼濾波器能夠從時間序列中不完全、包含雜訊的測量中…

Bash Script 語法解析

各種單雙括弧、特殊符號語法

Curly Brackets {}

{} 用法1：操作變數

• 建議所有的變數都要用 {} 標好，避免混淆。

調用變數 ${}
$ foo=123         # 等號前後不能有空白
$ echo "${foo}"

取得部分字串/字元數…

POSIX Timer

SIGEV_SIGNAL/SIGEV_THREAD

Signals

sigev_notify

SIGEV_NONE: Do nothing. I can use timer_gettime() and timer_getoverrun() to query.

SIGEV_SIGNAL: When timer expire, the kernel…

Linux IO

Buffered IO, Direct IO, mmap

Buffered IO

Page Cache 頁緩存

Semiconductor Note

PN Semiconductor、Diode、BJT、JFET、MOSFET、CMOS、IC

半導體 Semiconductor

Convolution Cheat Sheet

Padding/Stride

ARM Processor

SSE, OOE, Pipeline, Von Neumann, Harvard, Cortex, SoC, Affinity

AArch64 Instruction Set

RISC, ARM, Registers, Instruction, Stack Frame

RISC (Reduced Instruction Set Computer)

• 相較於 CISC (complex instruction set computer)
• David Patterson…

C++ Cast

static_cast, dynamic_cast, const_cast, reinterpret_cast

Why C++ has four different casts, but in C only has one?

• Inheritance
• Templates