The switching regulator is increasing in popularity because it offers the advantages of higher power conversion efficiency and increased design flexibility (multiple output voltages of different polarities can be generated from a single input voltag
1,01.zipDisplaying a 256 color bitmap在程序中显示256色的位图(6KB)2,02.zipCreating a bitmap object from a BMP file从位图文件中创建位图对象(6KB)3,03.zipAn auto-sizing bitmap picture control一个自适应大小的位图控件(16KB)4,04.zipWriting a bitmap to a BMP file将一个位图写到BMP文件中(11KB)5,05.zipB
1 , vb5dialog.zipThis demonstrates how to subclass the Common Dialog Dialogs and manipulate a specific Dialog.2 , cpnl.zipForm_Taskbar is a control for Visual Basic which, once placed onto a form, makes the form act like the Taskbar (minus the Start
1,Interpolation.zipA small application for interpolation of (x,y) data such that datapoints are spaced by an interval choosen by the user. Also demonstrates the use of MS Rich TextBox 6.0 control and basic I/O of text (data) files. A detailed Word 6
.net 任Imports System Imports System.Windows.Forms Imports System.Collections Namespace ListViewItemComparer ' Implements the manual sorting of items by column. Public Class IComparer Private col As Int32 Private order As SortOrder Public Sub new() c
Preface xxi 1 Number Systems 1 1.1 Analogue Versus Digital 1 1.2 Introduction to Number Systems 2 1.3 Decimal Number System 2 1.4 Binary Number System 3 1.4.1 Advantages 3 1.5 Octal Number System 4 1.6 Hexadecimal Number System 4 1.7 Number Systems
本文主要是利用Python的第三方库Pillow，实现单通道灰度图像的颜色翻转功能。
# -*- encoding:utf-8 -*-
import os
import sys
from PIL import Image
from PIL import ImageOps
def img_gray_invert(img_path):
invert input image.
if not os.path.isfile(img_path):
print Error for
