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The PCF8578 is a low power CMOS1 LCD row and column driver, designed to drive dotmatrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The device has40 outputs, of which 24 are programmable and configurable for the following ratios ofrows/columns: 32¤8, 24¤16, 16¤24 or 8¤32. The PCF8578 can function as a stand-alone LCDcontroller and driver for use in small systems. For larger systems it can be used inconjunction with up to 32 PCF8579s for which it has been optimized. Together these twodevices form a general purpose LCD dot matrix driver chip set, capable of driving displaysof up to 40960 dots. The PCF8578 is compatible with most microcontrollers andcommunicates via a two-line bidirectional bus (I2C-bus). Communication overhead isminimized by a display RAM with auto-incremented addressing and display bankswitching.
標簽：
8578
PCF
LCD
圖形點陣
上傳時間：
2013-10-23
上傳用戶：頂?shù)弥?/p>
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1 FEATURES· Single chip LCD controller/driver· 1 or 2-line display of up to 24 characters per line, or2 or 4 lines of up to 12 characters per line· 5 ′ 7 character format plus cursor; 5 ′ 8 for kana(Japanese syllabary) and user defined symbols· On-chip:– generation of LCD supply voltage (external supplyalso possible)– generation of intermediate LCD bias voltages– oscillator requires no external components (externalclock also possible)· Display data RAM: 80 characters· Character generator ROM: 240 characters· Character generator RAM: 16 characters· 4 or 8-bit parallel bus or 2-wire I2C-bus interface· CMOS/TTL compatible· 32 row, 60 column outputs· MUX rates 1 : 32 and 1 : 16· Uses common 11 code instruction set· Logic supply voltage range, VDD - VSS: 2.5 to 6 V· Display supply voltage range, VDD - VLCD: 3.5 to 9 V· Low power consumption· I2C-bus address: 011101 SA0.
標簽：
2116
PCF
LCD
驅(qū)動器芯片
上傳時間：
2013-11-08
上傳用戶：laozhanshi111
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16 16點陣顯示漢字原理及顯示程序
#include "config.h"
#define DOTLED_LINE_PORT PORTB #define DOTLED_LINE_DDR DDRB #define DOTLED_LINE_PIN PINB
#define DOTLED_LINE_SCKT PB1 #define DOTLED_LINE_SCKH PB5 #define DOTLED_LINE_SDA PB3
#define DOTLED_row_PORT PORTC #define DOTLED_row_DDR DDRC #define DOTLED_row_PIN PINC
#define DOTLED_row_A0 PC0 #define DOTLED_row_A1 PC1 #define DOTLED_row_A2 PC2 #define DOTLED_row_A3 PC3 #define DOTLED_row_E PC4 uint8 font[] = { /*-- 調(diào)入了一幅圖像：這是您新建的圖像 --*/ /*-- 寬度x高度=16x16 --*/ 0x00,0x00,0x00,0x00,0x08,0x38,0x18,0x44,0x08,0x44,0x08,0x04,0x08,0x08,0x08,0x10, 0x08,0x20,0x08,0x40,0x08,0x40,0x08,0x40,0x3E,0x7C,0x00,0x00,0x00,0x00,0x00,0x00 }; static void TransmitByte(uint8 byte); static void Selectrow(uint8 row); static void FlipLatchLine(void);
static void TransmitByte(uint8 byte) { uint8 i; for(i = 0 ; i < 8 ; i ++) { if(byte & (1 << i)) { DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SDA); } else { DOTLED_LINE_PORT &= ~_BV(DOTLED_LINE_SDA); } //__delay_cycles(100); DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SCKH); //__delay_cycles(100); DOTLED_LINE_PORT &= ~_BV(DOTLED_LINE_SCKH); //__delay_cycles(100); } }
static void Selectrow(uint8 row) { //row -= 1; row |= DOTLED_row_PIN & 0xe0; DOTLED_row_PORT = row; }
static void FlipLatchLine(void) { DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SCKT); DOTLED_LINE_PORT &= ~_BV(DOTLED_LINE_SCKT); }
void InitDotLedPort(void) { DOTLED_LINE_PORT &= ~(_BV(DOTLED_LINE_SCKT) | _BV(DOTLED_LINE_SCKH)); DOTLED_LINE_PORT |= _BV(DOTLED_LINE_SDA); DOTLED_LINE_DDR |= _BV(DOTLED_LINE_SCKT) | _BV(DOTLED_LINE_SCKH) | _BV(DOTLED_LINE_SDA); DOTLED_row_PORT |= 0x1f; DOTLED_row_PORT &= 0xf0; DOTLED_row_DDR |= 0x1f; } void Enablerow(boolean IsEnable) { if(IsEnable) { DOTLED_row_PORT &= ~_BV(DOTLED_row_E); } else { DOTLED_row_PORT |= _BV(DOTLED_row_E); } } void PrintDotLed(uint8 * buffer) { uint8 i , tmp; for(i = 0 ; i < 16 ; i ++) { tmp = *buffer ++; TransmitByte(~tmp); tmp = *buffer ++; TransmitByte(~tmp); Selectrow(i); FlipLatchLine(); } } void main(void) { InitDotLedPort(); Enablerow(TRUE); while(1) { PrintDotLed(font); __delay_cycles(5000); } }
//---------------------------------------------------- config.h文件
#ifndef _CONFIG_H #define _CONFIG_H
//#define GCCAVR
#define CPU_CYCLES 7372800L
#ifndef GCCAVR #define _BV(bit) (1 << (bit)) #endif
#define MSB 0x80 #define LSB 0x01
#define FALSE 0 #define TRUE 1 typedef unsigned char uint8; typedef unsigned int uint16; typedef unsigned long uint32; typedef unsigned char boolean; #include <ioavr.h> #include <inavr.h>
#include "dotled.h" #endif
//-----
標簽：
16
點陣顯示
漢字
顯示程序
上傳時間：
2013-11-18
上傳用戶：mnacyf
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SelectionDemo also has code (not included in the preceding snippet) that changes the table s selection orientation. By changing a couple of boolean values, you can make the table allow either column selections or individual cell selections, instead of row selections.
標簽：
SelectionDemo
the
preceding
included
上傳時間：
2015-05-04
上傳用戶：gut1234567
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function y_cum = cum2x (x,y, maxlag, nsamp, overlap, flag)
％CUM2X Cross-covariance
％ y_cum = cum2x (x,y,maxlag, samp_seg, overlap, flag)
％ x,y - data vectors/matrices with identical dimensions
％ if x,y are matrices, rather than vectors, columns are
％ assumed to correspond to independent realizations,
％ overlap is set to 0, and samp_seg to the row dimension.
％ maxlag - maximum lag to be computed [default = 0]
％ samp_seg - samples per segment [default = data_length]
％ overlap - percentage overlap of segments [default = 0]
％ overlap is clipped to the allowed range of [0,99].
標簽：
cum2x
y_cum
Cross-covariance
function
上傳時間：
2015-09-08
上傳用戶：xieguodong1234
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Student result management system
Use the C language realization system
2, the data structure making use of the structure body several realization student s result design
3, the system have increment, search, insert, row preface etc. basic function
4, the each function mold piece request of system use the form of function realization
5, completion design mission combine write a course a design report.
6, student the existence document of the result information in
標簽：
system
realization
management
structure
上傳時間：
2013-11-29
上傳用戶：1966640071
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％ 文件名：randlsbget.m
％ 程序員:余波
％ 編寫時間:2007.6.25
％ 函數(shù)功能: 本函數(shù)將完成提取隱秘于上的秘密信息
％ 輸入格式舉例:result=( scover.jpg ,56, secret.txt ,2001)
％ 參數(shù)說明:
％ output是信息隱藏后的圖象
％ len_total是秘密信息的長度
％ goalfile是提取出的秘密信息文件
％ key是隨機間隔函數(shù)的密鑰
％ result是提取的信息
function result=randlsbget(output,len_total,goalfile,key)
ste_cover=imread(output)
ste_cover=double(ste_cover)
％ 判斷嵌入信息量是否過大
[m,n]=size(ste_cover)
frr=fopen(goalfile, a )
％ p作為信息嵌入位計數(shù)器將信息序列寫回文本文件
p=1
％ 調(diào)用隨機間隔函數(shù)選取像素點
[row,col]=randinterval(ste_cover,len_toal,key)
for i=:len_toal
if bitand(ste_cover(row(i),col(i)),1)==1
fwrite(frr,1, bit1 )
result(p,1)
else
fwrite(frr,0, bit1 )
result(p,1)=0
end
if p==len_total
break
end
p=p+1
end
fclose(frr)
標簽：
randlsbget
result
scover
2007
上傳時間：
2015-11-10
上傳用戶：yzhl1988
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Dijkstra算法求最短路徑(C#版) using System
using System.Collections
using System.Text
namespace Greedy
{
class Marx
{
private int[] distance
private int row
private ArrayList ways = new ArrayList()
public Marx(int n,params int[] d)
{
this.row = n
distance = new int[row * row]
for (int i = 0 i < row * row i++)
{
this.distance[i] = d[i]
標簽：
System
using
Collections
namespace
上傳時間：
2013-12-29
上傳用戶：liglechongchong
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Using Gaussian elimination to solve linear equations.
// In this version, we allow matrix of any size. This is done by treating
// the name of a 2-dimensional array as pointer to the beginning of the
// array. This makes use of the fact that arrays in C are stored in
// row-major order.
標簽：
elimination
equations
Gaussian
version
上傳時間：
2016-02-14
上傳用戶：hxy200501
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Parking Lot Simulation：
Parking lot attendants often park cars bumper-to-bumper, several cars deep. This maximizes the number of cars they can fit into a parking lot at the expense of complicating the process of retrieving someone s car when they want to leave. Consider the case of a person wanting to leave the parking lot but their car is parked in the back of a row of cars. In this case, all the cars parked in front of this person s car must be temporarily moved to allow this person to leave.
標簽：
Parking
cars
bumper-to-bumper
Simulation
上傳時間：
2016-02-15
上傳用戶：lepoke
