Product Information

MIKROE-86

Hot MIKROE-86 electronic component of MikroElektronika

Datasheet
Daughter Cards & OEM Boards KEYPAD 4x4 ADAPTER BOARD

Manufacturer: MikroElektronika
This product is classified as Large/Heavy, additional shipping charges may apply. A customer service representative may contact you after ordering to confirm exact shipping charges



Price (USD)

1: USD 2.7346 ea
Line Total: USD 2.7346

34 - Global Stock
Ships to you between
Thu. 04 Apr to Wed. 10 Apr
MOQ: 1  Multiples: 1
Pack Size: 1
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34 - Global Stock


Ships to you between Thu. 04 Apr to Wed. 10 Apr

MOQ : 1
Multiples : 1

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MIKROE-86
MikroElektronika

1 : USD 2.7346

23 - Global Stock


Ships to you between Wed. 10 Apr to Fri. 12 Apr

MOQ : 1
Multiples : 1

Stock Image

MIKROE-86
MikroElektronika

1 : USD 10.1068

     
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Manual Keypad 4x4 All Mikroelektronikas development systems feature a large number of peripheral modules expanding microcontrollers range of application and making the process of program testing easier. In addition to these modules, it is also possible to use numerous additional modules linked to the development system through the I/O port connectors. Some of these additional modules can operate as stand-alone devices without being connected to the microcontroller. MikroElektronika Additional boardKeypad 4x4 Keypad 4x4 Keypad 4x4 is used for loading numerics into the microcontroller. It consists of 16 buttons arranged in a form of an array containig four lines and four columns. It is connected to the development system by regular IDC 10 female connector plugged in some development systems port. Figure 1: Keypad 4x4 Figure 2: Keypad 4x4 connected to development system The keyboard is usually used as follows: 1. Four microcontrollers pins should be defined as outputs, and other four pins should be defined as inputs. In order the keypad to work properly, pull-down resistors should be placed on the microcontrollers input pins, thus defining logic state when no button is pressed. 2. Then, the output pins are set to logic one (1) and input pins logic state is read. By pressing any button, a logic one (1) will appear on some input pin. 3. By combining zeros and ones on the output pins, it is determined which button is pressed. Figure 3: Keypad 4x4 connection schematic A far easier way to load data by using keypad 4x4 is by employing ready-to-use funtions provided in the Keypad Library of any Mikroelektronikas compiler. On the following pages there are three simple examples written for PIC16F887 microcontrolller in mikroC, mikroBasic and mikroPascal programming languages. In all cases, the number loaded via keypad is converted into the equivalent ASCII code (0...9, A...F) and then it is displayed in the second line of LCD display. In this case, pull-down resistors are placed on output pins RD0 - RD3 and are used to determine logic zero (0) in idle state. MikroElektronika

Tariff Desc

8543.70.00 Other machines and apparatus Free
13 Signal processors (graphic equalisers, crossovers etc.) 91 Other Free

9027.10.00 Instruments and apparatus for physical or chemical analysis (eg, polarimeters, refractometers, spectrometers, gas or smoke analysis apparatus); instruments and apparatus for measuring or checking viscosity, porosity, expansion, surface tension or the like; instruments and apparatus for measuring or checking quantities of heat, sound or light (including exposure meters); microtomes Free

9031.80.00 MEASURING OR CHECKING INSTRUMENTS, APPLIANCES AND MACHINES, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER; PROFILE PROJECTORS Other instruments, appliances and machines Free

9030.31.00 Oscilloscopes, spectrum analysers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, x-ray, cosmic or other ionising radiations.
Other instruments and apparatus, for measuring or checking voltage, current, resistance or power Multimeters without a recording device Free

8473.30.00 Parts and accessories of the machines of 8471 AUTOMATIC DATA PROCESSING MACHINES AND UNITS THEREOF; MAGNETIC OR OPTICAL READERS, MACHINES FOR TRANSCRIBING DATA ONTO DATA MEDIA IN CODED FORM AND MACHINES FOR PROCESSING SUCH DATA, NOT ELSEWHERE SPECIFIED OR INCLUDED:
.Other 71 No Weighing less than 1kg Free

8537 BOARDS, PANELS, CONSOLES, DESKS, CABINETS AND OTHER BASES, EQUIPPED WITH TWO OR MORE APPARATUS OF 8535 OR 8536, FOR ELECTRIC CONTROL OR THE DISTRIBUTION OF ELECTRICITY, INCLUDING THOSE INCORPORATING INSTRUMENTS OR APPARATUS OF CHAPTER 90, AND NUMERICAL CONTROL APPARATUS, OTHER THAN SWITCHING APPARATUS OF 8517:
8538 PARTS SUITABLE FOR USE SOLELY OR PRINCIPALLY WITH THE APPARATUS OF 8535, 8536 OR 8537:
8538.10.10 22 For programmable controllers Free
MIKRO ELEKTRONIKA
Mikroe
MikroElektronika
MikroElektronika d.o.o.

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