#11『堃喬』ESP-01 ESP8266EX WiFi收發模組適用Arduino

ESP-01 #ESP8266EX #WiFi收發模組#適用Arduino、micro:bit、樹莓派等開發板○ 適合各種開發控制板的互動學習與應用 全店商品含稅開發票 開立方式：個人無 ...

於shopee.tw

#12ESP8266EX - Olimex

FEATURES. Complies with 802.11 b/g/n; Integrated low power 32-bit MCU; Integrated 10-bit ADC; Integrated TCP/IP protocol stack; Integrated TR switch, balun, ...

於www.olimex.com

#13ESP8266EX footprint & symbol by Espressif Systems | SnapEDA

Download schematic symbols, PCB footprints, 3D Models, pinout & datasheet for the ESP8266EX by Espressif Systems. Exports to OrCAD, Allegro, Altium, PADS, ...

於www.snapeda.com

#14ESP8266EX Espressif Systems - RF Receivers, Transceivers

Find the best pricing for Espressif Systems ESP8266EX by comparing bulk discounts from 4 distributors. Octopart is the world's source for ESP8266EX ...

於octopart.com

#15ESP8266EX-Microport Computer Electronics Inc.

ESP8266EX. Part No.: MPGC-ESP8266EX Designed for use in Internet of Things (IoT), mobile, and wearable electronics applications, the wireless ESP8266 chip ...

於www.microport.com.tw

#16ESP-12F ESP8266EX 機智雲WIFI開發板(USB) - 廣華電子商城

ESP-12F (ESP-12F) ESP8266EX 機智雲WIFI開發板(USB) - Arduino WIFI/Ethernet網路模組, ESP-12F,ESP-12F,物聯網,ESP8266EX,ESP8266MOD,機智雲I開發板,K18,,ESP8266EX ...

於shop.cpu.com.tw

#17ESP8266EX Espressif Systems - Datasheet PDF, Footprint ...

Download the ESP8266EX datasheet from Espressif Systems. IC ESP8266, SDIO 2.0, SPI, UART, QFN32, RF switch, balun, 24dBm PA, DCXO, PMU/Espresiff.

於www.allaboutcircuits.com

#18ESP8266EX - UCC INDU GmbH

Part Number ESP8266EX Brand Espressif Systems stock quantity 500. Date Code 20+. Lead time stock. Category RF/IF and RFID Package 32VFQFN

於uccindu.com

#19ESP8266EX ESPRESSIF - IC: SoC | WiFi; FTP,HTTP,IPv4 ...

ESPRESSIF ESP8266EX | IC: SoC; WiFi; FTP,HTTP,IPv4,TCP,UDP; SMD; QFN32; 170/56mA - This product is available in Transfer Multisort Elektronik.

於www.tme.eu

#20ESP8266EX Espressif Systems | RF/IF and RFID | DigiKey

Order today, ships today. ESP8266EX – IC RF TxRx + MCU WiFi 802.11b/g/n 2.4GHz 32-VFQFN Exposed Pad from Espressif Systems. Pricing and Availability on ...

於www.digikey.com.au

#21ESP8266EX by Espressif SOC - System On Chip Processors

Buy Espressif ESP8266EX in Avnet Europe. View Substitutes & Alternatives along with datasheets, stock, pricing and search for other SOC - System On Chip ...

於www.avnet.com

#22ESP8266EX | ESP8266 Robotics Projects - Packt Subscription

The ESP8266EX (Figure 1.1) is a single-chip microcontroller developed by Espressif (https://espressif.com/). It can be used to develop low-power, ...

於subscription.packtpub.com

#23模塊esp8266ex - 阿里巴巴商務搜索

阿里巴巴為您找到56條模塊esp8266ex產品的詳細參數，實時報價，價格行情，優質批發/供應等信息。 ... 樂鑫ESP32-WROOM-32D藍牙wifi模塊ESP8266EX芯片集成wifi藍牙模塊.

於tw.1688.com

#24ESP8266EX Datasheet - Gizwits

ESP8266EX integrates antenna switches, RF balun, power amplifier, low noise receive amplifier, filters and power management modules. The compact design ...

於docs.gizwits.com

#25ESP8266EX - Espressif Systems | Wireless SoC - everything RF

The ESP8266EX is a low-power, highly-integrated certified 2.4 GHz (802.11 b/g/n) Wi-Fi SoC solution for IoT Applications. This compact SoC consists of a ...

於www.everythingrf.com

#26ESP8266EX Wi-Fi Microchip: Pinout Schematic and Datasheet

ESP8266EX can perform either as a standalone application or as a slave to a host MCU. This article enforces datasheet, pinout, applications, schematic...

於www.utmel.com

#27E103-W01 ESP8266EX UART串口模块 - 亿佰特

芯片方案：ESP8266EX. 工作频率：2.4GHz. 发射功率：20dBm. 通信距离：100m. 产品净量：1.5±0.1g. 接口类型：UART I/O. 产品简介：E103-W01模块是成都亿佰特电子科技 ...

於www.ebyte.com

#28ESP8266EX_（ESPRESSIF 乐鑫）ESP8266EX中文资料_价格

立创商城提供（ESPRESSIF 乐鑫）的（无线收发芯片）ESP8266EX中文资料,PDF数据手册,引脚图,封装规格,价格行情和库存等信息，采购ESP8266EX上立创商城。

於item.szlcsc.com

#29ESP8266 ESP8266EX ESP-12N Wireless Remote Control ...

ESP8266 ESP8266EX ESP-12N Wireless Remote Control Serial Port WiFi Transmission Module WiFi Adapter Ultra-Low Power 32-bit CPU: Amazon.com: Industrial ...

於www.amazon.com

#30WIFI SMD module, ESP8266EX, 4 MB SPI, 3.3 V, 18 x 20 x 3.2 ...

ESP-WROOM-02D/02U ESP-WROOM-02D(M1102H1600PH3Q0) SMD Module ESPWROOM-02D, ESP8266EX, 2 MB SPI flash, UART Mode, Internal PCB onboard antenna

於www.reichelt.com

#31LTC堃喬-電子電機零件批發零售

ESP-01 ESP8266EX WiFi收發模組適用Arduino、micro:bit、樹莓派等開發板適合各級學校課綱生活科技 產品代號: MTARDESP8266. 產品活動標籤. 限時下殺. 商品名稱.

於www.ltc.com.tw

#32ESPRESSIF SMART CONNECTIVITY PLATFORM: ESP8266EX

ESP8266EX is among the most integrated WiFi chip in the industry; it integrates the antenna switches, RF balun, power amplifier, low noise receive amplifier, ...

於www.mikrocontroller.net

#33ESP8266 - Wikipedia

The ESP8266 is a low-cost Wi-Fi microchip, with built-in TCP/IP networking software, ... ESP-01 module by Ai-Thinker with ESP8266EX SoC.

於en.wikipedia.org

#34ESP8266EX Wi-Fi Internet of Things Module Test Report ...

Wi-Fi Internet of Things Module Test Report details for FCC ID 2AC7Z-ESP8266EX made by ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD. Document Includes Test Report ...

於fccid.io

#35esp8266ex espressif - SOS electronic

ESP8266EX ESPRESSIF - IC RF TxRx + MCU WiFi 802.11b/g/n 2.4GHz QFN32 - Other Digital Integrated Circuits - Orders placed until 12:00 are dispatched the same ...

於www.soselectronic.com

#36ESP8266EX IC QFN32 Online at Best Price | Robu.in

Buy Brand New Original IC Chip ESP8266EX, QFN32-pin, RF System on a Chip - SoC SMD, is among the most integrated WiFi chip in the industry...

於robu.in

#37Espressif ESP8266EX WiFi/WLAN SoC - Watterott electronic

The Espressif ESP8266EX is a highly integrated chip designed for the needs of an increasingly connected world It offers a complete and self-contained Wi-Fi.

於shop.watterott.com

#38ESP8266EX芯片介绍 - 风诰'Blog

ESP8266EX 简介ESP8266EX 是由乐鑫公司开发的一款32 位的Wi-Fi SoC 芯片。ESP8266EX 拥有完整的且⾃自成体系的Wi-Fi ⽹网络功能，既能够独⽴立应⽤用 ...

於www.sage-xiong.cn

#39ESP8266EX Datasheet - Adafruit Industries

ESP8266EX is among the most integrated WiFi chip in the industry; it integrates the antenna switches, RF balun, power amplifier, ...

於cdn-shop.adafruit.com

#40(PDF) ESP8266EX Datasheet - high integration wireless SOCs

ESP8266EX Hoja de datos, ESP8266EX datasheet, Espressif Systems - high integration wireless SOCs, Hoja Técnica, ESP8266EX pdf, dataark, wiki, arduino, ...

於www.datasheet.es

#41ESP8266 - ESP8266EX - Serial Interface Wi-Fi Module - ESP-01

ESP8266EX - Serial Interface Wi-Fi Module - ESP-01. ESP8266 is a low cost Wi-Fi to Serial Chip. This chip made it easy to include Wi-Fi connectivity in low ...

於rarecomponents.com

#42ESP8266EX在线购买

接口类型：UART 输出功率：16dBm 工作电压：2.5V ~ 3.6V 类型：TxRx + MCU 作业频率：2.4GHz Wi-Fi芯片：ESP8266EX 高度集成了天线开关、射频balun、功率放大器、低噪 ...

於datasheet.eeworld.com.cn

#43ESP8266 数据手册- ESP8266EX WiFi Module - Espressif

零件编号: ESP8266, ESP8266EX Package : QFN32 Type 制造商: Espressif Systems IOT Team Introduction Espressif Systems' Smart Connectivity ...

於datasheet5.cn

#44ESP8266EX - ESPRESSIFSYSTEMS - X-On Electronics

RF System on a Chip - SoC SMD IC ESP8266EX, QFN32-pin, 5*5mm. Manufacturer: Espressif Systems. Price (Ex GST). loading Please wait... *. From 6.8571.

於www.x-on.com.au

#45ESP8266EX芯片资料 - 21ic电子技术论坛

ESP8266EX 具有的省电模式适用于各种低功耗应用场景。内置超低功耗Tensilica L106 32 位RISC 处理器，CPU 时钟速度最高可达160 MHz，支持实时操作系统( ...

於bbs.21ic.com

#465 PCS ESP8266EX QFN-32 ESP8266 32-bit MCU & 2.4 GHz ...

2 PCS ESP8266EX QFN-32 32-bit MCU & 2.4 GHz Wi-Fi SoCs IC CHIP ... 10pcs SMD ESP8266EX WiFi Wireless IC Chip with SDIO 2.0 SPI UART Interface.

於www.ebay.com

#47ESP8266EX Datasheet - Micros

This document introduces the specifications of ESP8266EX, including the following ... ESP8266EX including CPU, flash and memory, clock, radio, Wi-Fi, and.

於www.micros.com.pl

#48HKD ESP8266EX NODEMCU WIFI BOARD - Communica ...

HKD ESP8266EX NODEMCU WIFI BOARD. D1 Mini NODEMCU LUA WIFI Board Based on ESP-8266EX. 11 Digital I/O'S, All Pins Have Interrupt/PWM/I2C.

於www.communica.co.za

#49ESP8266EX技术规格书 - 世强

ESP8266EX 集成了天线开关、射频balun、功率放大器、低噪声放大器、滤波器和电源管理模块。这样紧凑的设计仅需极少的外部电路并且能将PCB 的尺寸降到最小。 ESP8266EX 还 ...

於www.sekorm.com

#50ESP8266EX Single-core 32-bit MCU 2.4 GHz Wi-Fi SoCs

Espressif's ESP8266EX delivers highly integrated Wi-Fi SoC solution to meet users continuous demands for efficient power usage, compact design and reliable ...

於www.evelta.com

#51Espressif ESP8266EX Wi-Fi Chip - Solid State Supplies

ESP8266EX integrates Tensilica L106 32-bit micro controller (MCU) which features extra low power consumption and 16-bit RSIC, reaching a maximum clock speed of ...

於www.sssltd.com

#52ESP8266EX - 安信可科技

本⽂文介绍ESP8266EX 的常⻅见问题以及解答。 发布说明. ⽂文档变更更通知. ⽤用户可通过乐鑫官⽹网订阅⻚页⾯面https://www.espressif.com/zh-hans/subscribe 订阅 ...

於docs.ai-thinker.com

#53ESP8266EX - Espressif Systems - RF System on a Chip - SoC

ESP8266EX, Espressif Systems, RF System on a Chip - SoC SMD IC ESP8266EX, QFN32-pin, 5*5mm | Buy RF System on a Chip - SoC on SemiKart at the lowest price ...

於www.semikart.com

#54ESP8266EX | Espressif Systems | RF Integrated Circuits

ESP8266EX | Espressif Systems | RF System on a Chip; 2.4GHz Wi-Fi; Tensilica L106 32-bit processor; 2.5V-3.6V; 5x5mm QFN32 | RF Integrated Circuits ...

於store.comet.bg

#55Espressif Systems ESP8266EX - Ultra Librarian

... 18 SD_DATA_2 19 SD_DATA_3 20 SD_CMD 21 SD_CLK 22 SD_DATA_0 23 SD_DATA_1 24 GPIO5 25 26 U0TXD 27 28 29 VDDD 30 VDDA 31 32 33. Normal View. ESP8266EX 1 ...

於app.ultralibrarian.com

#56Espressif ESP8266EX: AT Instruction Set - wless.ru

AT+CWMODE_DEF - WIFI mode（sta/AP/sta+AP）,save to Flash. Page 15. ESP8266EX AT Instruction Set. 15/ 42. Espressif Systems. June 16, 2014. Type ...

於www.wless.ru

#57ESP8266EX Datasheet | Espressif Systems - Datasheetspdf.com

Part Number. ESP8266EX. Description. high integration wireless SOCs. Feature, ESP8266EX Datasheet Version 6.6 Espressi f Systems Copyright © 2020 ...

於datasheetspdf.com

#58ESP8266EX - Tiny Wireless 802.11 b/g/n Chip - Grid Connect

Designed for use in Internet of Things (IoT), mobile, and wearable electronics applications, the wireless ESP8266EX chip is a highly integrated, ...

於www.gridconnect.com

#59ESP8266EX 技术规格表 - Wi-Fi芯片

描述ESP8266EX 上的主要的功能模块和协议,包括CPU、闪存和存 ... ESP8266EX 只需通过SPI/SDIO 接口或12C/UART 口即可作为Wi-Fi适配器,应用到任何.

於www.fengqitec.com

#600B ESP8266 Hardware User Guide EN V1.1 - UserManual.wiki

values of C1 and C2 are 10pF<C1, C2<22pF if the crystal oscillator frequency is 40MHz. Figure 7 ESP8266EX Crystal oscillators. Note: Defects in the craf ...

於usermanual.wiki

#61ESP8266EX WiFi IC ESP8266 - ElectroDragon

ESP8266EX WiFi IC ESP8266 ... ( There are no reviews yet. ) $1.20. SKU: CIC1026 Categories: ESP8266 / ESP8285, MCUs ...

於www.electrodragon.com

#62esp8266ex integrated circuit qfn-32 - Adiwana Hotels & Resorts

Find many great new & used options and get the best deals for ESP8266EX INTEGRATED CIRCUIT QFN-32 at the best online prices at , Free delivery for many ...

於adiwanahotels.com

#63关于ESP8266EX的一些资料 - 博客园

乐鑫智能互联平台ESP8266EX 拥有高性能无线SOC，给移动平台设计师带来福⾳音，它以最低成本提供最大实用性，为WiFi 功能嵌入其他系统提供无限可能。

於www.cnblogs.com

#64ESP8266EX - Espressif Systems - Datasheet, Prices & Inventory

Espressif Systems ESP8266EX inventory, pricing and datasheets from authorized distributors. Use the trusted source for electronic parts.

於www.trustedparts.com

#65Esp8266ex only creates ap when connected to PC : r/WLED

Hello, I am trying to use a esp8266ex with some ws2812b strips. I flashed the latest appropriate build using the ESPhome flasher on windows ...

於www.reddit.com

#66ESP8266EX Stock and Price by Distributor - FindChips

Part # Manufacturer Stock Price Buy ESP8266EX DISTI # 1904‑1001‑1‑ND Espressif Inc 19623; In Stock 1 $1.6000 Buy Now ESP8266EX DISTI # 1904‑1001‑6‑ND Espressif Inc 19623; In Stock 1 $1.6000 Buy Now ESP8266EX DISTI # 1904‑1001‑2‑ND Espressif Inc 15000; In Stock 5000 $1.6000 Buy Now

於www.findchips.com

#67ESP8266EX - Ультран

ESP8266EX - высокоинтегрированная Wi-Fi - система на кристалле, отвечающая требованиям высокой энергоэффективности, компактных размеров, надежности и ...

於ultran.ru

#68ESP8266EX ESP-01S Wireless Transceiver Module with 1MB ...

Manufacturer Part No: ESP8266EX Datasheet: Click Here RoHS: Yes This is a wifi solution based on IC ESP8266 from Espressif.The ESP8266 wifi module is a self ...

於www.taydaelectronics.com

#69Radino WiFi: Arduino With ESP8266EX - electronics-lab | Rik

The Radino WiFi combines an ATmega32U4 with the popular ESP8266EX WiFi SoC to the small Radino package. It's full Arduino-compatible ...

於www.electronics-lab.com

#70Z6441 ESP8266EX USB Mini Wi-Fi Module - Altronics

This USB WiFi module is a complete and self-contained WiFi network solution that can operate independently or as a slave on other host MCUs.

於www.altronics.com.au

#71ESP8266EX芯片文档_m0_37964621的博客

目录概述芯片: ESP8266EX集成外设Wi-Fi特性参数Wi-Fi硬件软件应用场景功能描述CPU、存储和FlashCPU内置存储外置Flash时钟高频时钟外部时钟参考要求 ...

於blog.csdn.net

#72[Arduino][ESP8266] ESP8266 開發指南– 硬體篇 - Sam Notes

ESP8266EX SoC. 不管你拿到的ESP8266的控制板是哪家板廠做的，都有一個共同點，就是他板子上的主晶片都是下圖的. ESP8266EX 這顆WiFi integrated ...

於emmanuel-studios.blogspot.com

#73No Console Access After Flashing ESP8266EX - Espruino ...

ESP8266 Chip is ESP8266EX Features: WiFi Crystal is 26MHz MAC: 5c:cf:7f:49:d7:83 Uploading stub... Running stub... Stub running.

於forum.espruino.com

#74(a) The functional diagram of ESP8266EX (b) NodeMCU ...

Download scientific diagram | (a) The functional diagram of ESP8266EX (b) NodeMCU ESP2866 board [23]. from publication: MEMS and IoT Applications in ...

於www.researchgate.net

#75ESP8266EX Fun With Relay Module, Home Assistant & MQTT

於www.youtube.com

#76ESP8266EX Распиновка (pinouts) чипа – esp8266

Pin Name Type 1 VDDA P 2 LNA I/O 3 VDD3P3 P

於esp8266.ru

#77ESP8266EX based wifi module does not respond on any AT ...

Hello I have a few wifi modules from eByte type E103-W01-IPX These run on chip ESP8266EX. I know they are programmable devices but as I ...

於www.edaboard.com

#78ESP8266EX WI-FI 单核芯片的应用 - 知乎专栏

ESP8266EX 专为移动设备、可穿戴电子产品和物联网应用而设计，通过多项专有技术实现了超低功耗。它具有的省电模式适用于各种低功耗应用场景， ...

於zhuanlan.zhihu.com

#79ESP8266-002 ESP8266EX简介_任风流浪的技术博客

ESP8226EX简介 1、产品概述 2、EP8226EX结构图 3、特点 4、主要应用领域 5、管脚定义图 6、ESP12e最小系统. 1、产品概述. 乐鑫智能互联平台ESP8266EX ...

於blog.51cto.com

#80Differences between ESP8266 and ESP8266EX.

All contemporary modules are ESP8266EX, Adafruit Huzzah board (the official reference board) is ESP8266EX. So, that's what we officially support ...

於forum.micropython.org

#81Hardware Design - liot

The reference design of the ESP8266EX is shown in the following figure. ESP8266 Microcontroller Power Supply ESP8266EX Reference Design. Our own design is ...

於www.liot.io

#82I2c communication between ATMega328P and ESP8266ex ...

It looks like the extended pins are integrated into the ESP8266ex itself. Actually it is not because the bridge communicates via i2c in ...

於stackoverflow.com

#83ESP8266EX Распиновка (pinouts) чипа – esp8266 - Pinterest

Jun 28, 2016 - ESP8266, ESP8266EX Распиновка pinouts layouts datasheet. ... ESP8266EX Распиновка pinouts Circuit Diagram, Smart Home, Digital, Raspberry, ...

於www.pinterest.com

#84ESP8266-002 ESP8266EX簡介 - 台部落

ESP8226EX簡介1、產品概述2、EP8226EX結構圖3、特點4、主要應用領域5、管腳定義圖6、ESP12e最小系統1、產品概述樂鑫智能互聯平臺ESP8266EX擁有高性能 ...

於www.twblogs.net

#85ESP8266EX - InCircuit - the In-Circuit Wiki

ESP8266EX, single Chip WiFi network solution, SoC, 802.11bgn Smart Device. ESP8266EX. ESP8266 is a highly integrated chip designed for the ...

於wiki.in-circuit.de

#86E103-w01 wifi esp8266ex 2.4ghz 100mw pcb antenna iot uhf ...

Only US$7.99, buy best e103-w01 wifi esp8266ex 2.4ghz 100mw pcb antenna iot uhf wireless transceiver esp8266 transmitter and receiver rf module sale online ...

於www.banggood.com

#87Tutorial Wifi ESP8266EX Arduino - HeTPro

El ESP8266EX es uno de los chips con mayor integración de la industrial. Incluye una antena, switches, un amplificador de potencia, receptores ...

於hetpro-store.com

#88ESP8266 WiFi module programming with Arduino UNO board

The ESP8266 board contain the microcontroller ESP8266EX (32-bit ... CH_PD: chip power down pin, used to turn off the ESP8266EX chip, ...

於simple-circuit.com

#89Wifi-ESP8266EX copy - EasyEDA

Wifi-ESP8266EX. ... ESP8266EX Schematic copy. Open in Editor. Open in Editor. BOM. ID, Name, Designator, Footprint, Quantity.

於easyeda.com

#90第一期视频》《单片机实践项目》之ESP8266EX模块相关概念 ...

於www.bilibili.com

#91ESP8266 Pinout - IoT Bytes

ESP8266EX Chip Pinout: ESP8266EX Chip Pins Image Source: Google Image Search (image is used for quick reference and non-profit purpose only) ...

於iotbytes.wordpress.com

#92Connecting Arduino to Wifi using ESP8266 - scimad | blog

ESP-1 WiFi m‌odule consists of ESP8266EX WiFi SoC (System on a Chip) which is developed by ESPRESSIF, a company based on China founded in ...

於scimad.github.io

#93ESP8266EX - пара слов о платформе - DIYtimes.ru

ESP8266EX - пара слов о платформе · Протокол 802.11 b/g/n · Wi-Fi 2.4 GHz, поддержка WPA/WPA2 · Компактные размеры 11.5mm x 11.5mm · Интегрированный ...

於diytimes.ru

#94【選擇指南】ESP8266板卡眾多，如何選擇？ - 引領創新的科技 ...

ESP8266晶片內沒有儲存空間可放韌體，必須外接一個串列式傳輸的快閃記憶體來儲存韌體，即是指25系列，如25Q40有4Mbits（約512KB，如ESP-03）的儲存空間， ...

於makerpro.cc

#95Wemos d1 driver - Alixagro

0 is a WiFi capable dev board featuring the ESP8266EX as the controller and ... (Verified) This D1 Mini is a WeMos and Arduino compatible ESP8266EX-based ...

於alixagro.com

#96用ESP-01進行ESP8266開發，完全攻略 - 傑森創工

Arduino系列的開發板大家都很熟悉，也很強大，但常見的像是Arduno Uno、Nano、Mega等，都沒有WiFi功能，所以如果我們想要擁有網路功能，就要考慮其它 ...

於blog.jmaker.com.tw

#97Communication and Computing Systems: Proceedings of the 2nd ...

ESP8266EX has been designed for mobile, wearable physics and web of Things applications with the aim of achieving rock bottom power consumption with a ...

於books.google.com.tw

#98Wemos d1 mini pwm pins

wemos d1 mini pwm pins Wemos D1 Mini je Wifi vývojová breadbord kompatibilní deska, založená na ESP8266EX. Parameters:CPU 80 Mhz,Speed of 115200.

於machackova.sk

#99ADVANCES IN SOFTWARE ENGINEERING, EDUCATION, AND E LEARNING: ...

Esp8266ex overview (2020). https://www.espressif.com/en/products/hardware/esp8266ex/ overview. Accessed 12 April 2020 16.

於books.google.com.tw