Summary
Many control applications require converting some analog Input to a digital format. The ADCINC12 User
Module is a general-purpose, 12-bit analog to digital converter (ADC) that does just that. This Application
Note is meant to be a simple introduction into its operation. The steps required to define, place, and write
software are presented. Examples are developed in both assembly and C.
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<Input
TYPE="button"
NAME="objectName"
VALUE="buttonText"
[onClick="handlerText"]>
NAME specifies the name of the button object as a property of the enclosing form object and can be accessed using the name property. VALUE specifies the label to display on the button face and can be accessed using the value property.
// This program measures the voltage on an external ADC Input and prints the
// result to a terminal window via the UART.
//
// The system is clocked using the internal 24.5MHz oscillator.
// Results are printed to the UART from a loop with the rate set by a delay
// based on Timer 2. This loop periodically reads the ADC value from a global
// variable, Result.
DirectFB is a thin library that provides hardware graphics acceleration, Input device handling and abstraction, integrated windowing system with support for translucent windows and multiple display layers on top of the Linux Framebuffer Device.
1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as Input and returns a matrix B consisting of the columns of A in reverse order. Thus for example, if
A = 1 2 3 then B = 3 2 1
4 5 6 6 5 4
7 8 9 9 8 7
Write a main program to call reverse(A) for the matrix A = magic(5). Print to the screen both A and reverse(A).
2) Write a program which accepts an Input k from the keyboard, and which prints out the smallest fibonacci number that is at least as large as k. The program should also print out its position in the fibonacci sequence. Here is a sample of Input and output:
Enter k>0: 100
144 is the smallest fibonacci number greater than or equal to 100.
It is the 12th fibonacci number.
北京大學ACM比賽題目
Write a program to read four lines of upper case (i.e., all CAPITAL LETTERS) text Input (no more than 72 characters per line) from the Input file and print a vertical histogram that shows how many times each letter (but not blanks, digits, or punctuation) appears in the all-upper-case Input. Format your output exactly as shown.
