Verilog design example software anti shake design of key anti shake

Blog directory Write in front text Background introduction and review Single button Other design versions of single button Multiple buttons Write at the end reference material Make a friend Write in front Personal WeChat official account: FPGA LAB Home page of personal blog Note: learn to co ...

Posted on Fri, 19 Jun 2020 06:11:23 -0400 by rock_xl1

Understanding some of the concepts of search, aggregation in Elasticsearch through kibana

1. Corresponding entity in Java public class Person { String name; int age; } 2. Data in kibana { "_index": "person_index", "_type": "person_type", "_id": "i674x3IBsOhWggMeikEo", "_score": 1, "_source": { "age": 9, "name": "L ...

Posted on Thu, 18 Jun 2020 12:13:46 -0400 by huzefahusain

Encryption and decryption process based on CBC and DES

1, Introduction 1. Password classification: According to whether there is a key or not, the current cipher algorithms can be divided into keyless cipher and keyless cipher. Keyless cipher mainly includes hash function and message digest, while keyed cipher can be divided into symmetric cipher and as ...

Posted on Thu, 18 Jun 2020 07:04:27 -0400 by austinderrick2

The concept and application of spherical harmonic function: spherical harmonic function

The concept and application of spherical harmonic function   Properties of spherical harmonic function Similar to the properties of Fourier series, spherical harmonic function is also based on orthogonal function, and the orthogonal basis of Fourier series is sin(nx) and cos(nx). The spherical har ...

Posted on Thu, 18 Jun 2020 05:07:18 -0400 by Loathor__Healer

Mysql - DQL language

DQL language (2) multi-table query Cartesian set Equivalence / connection join link Internal connection External connection Common functions Character function Digital function Date function Subquery classification code Paging query grammar characteristic multi-table query Cartesian ...

Posted on Thu, 18 Jun 2020 04:00:00 -0400 by rkm11

Common file processing commands in python

0 foreword Recently, I've been dealing with the reading and processing of data sets. It's inevitable to use the knowledge points of file processing in python. Although some functions and knowledge points know what's going on, they don't feel that they have a solid grasp. Therefore, I plan to sort ou ...

Posted on Thu, 18 Jun 2020 01:14:11 -0400 by k_ind

Design of lab 3 for software construction experiment of HIT Harbin University of Technology

catalog 1, For ADT design 1.1 common design 1.2 personalized design 1.3 code display 2, Design of scheme and design model 2.1 scheme design 2.1.1 decorator mode (scheme 6) 2.2.2 delegation mode (scheme 5) 2.2.3 comprehensive consideration and selection scheme 2.3 factory, iterator, facade, state ...

Posted on Wed, 17 Jun 2020 04:05:53 -0400 by kenyabob

BigDecimal collection of Java scientific computing

1, The background of BigDecimal First, let's look at the following code example: @Test public void countDemo() { logger.info("result:{}", 0.06 + 0.01); logger.info("result:{}", 1.0 - 0.42); logger.info("result:{}", 4.015 * 100); logger.info("result:{}", 303.1 / 1000); } give the resul ...

Posted on Wed, 17 Jun 2020 03:21:46 -0400 by pixy

Memory and arrangement of knowledge points in binary tree

Binary tree In computer science, a binary tree is a tree structure in which each node has at most two subtrees. Generally, subtrees are called "left subtree" and "right subtree". Left subtree and right subtree are also binary trees. The subtrees of a binary tree can be divided into left and right, and the order cannot be rev ...

Posted on Tue, 16 Jun 2020 23:08:25 -0400 by ironside82

The largest data structure in Java: LinkedHashMap?

Author: Monarudohttps://www.jianshu.com/p/06a0fd962e0b There are many Map families, of which HashMap And Concurrent HashMap are the most used, while LinkedHashMap seems to be less useful, but it has a sequence.There are two types, one is the adding order, the other is the access order. LinkedHashMap inherits HashMap .So if it's you, how do yo ...

Posted on Tue, 16 Jun 2020 21:01:57 -0400 by aboldock