We often say PDA, so what is PDA, what is the meaning of the three words, which categories, which you want to buy a PDA before the necessary understanding, but also to buy a PDA before the first step.
Nouns analyze PDA
PDA, that is, Personal Digital Assistant (Personal Digital Assistant) means. As the name suggests, it is a digital tool to assist personal work. It mainly provides functions such as note-taking, address book, business card exchange and itinerary arrangement. Of course, with the progress of technology, some new functions such as digital recording have been added. Now the definition of PDA is actually very fuzzy, all the products are using this generic name to waltz through the market, and even many people are collectively referred to PDA as Pocket PC.
Categorization of PDAs
PDAs should be subdivided into four categories: electronic dictionaries, PDAs, handheld computers, and personal communication assistants. And the latter two have been slowly integrated together due to the development of technology and market.
Electronic dictionary
Among all the PDA products, this is the simplest one. Its main function is to provide the Chinese and English translation, telephone number storage, English words read aloud and other functions, it is characterized by all of its programs are solidified in the memory, so the storage capacity is limited, the function is relatively single and does not have the expandability. But these products also have their incomparable advantages. For example, they are more targeted, providing the required functions, such as games, calculations, note-taking, etc.. In addition, it also has a small size, simple operation and so on. Representatives of this kind of electronic dictionaries are QuickTranslate, Celebrity, Wenquxing and so on. Of course, some new electronic dictionaries nowadays also provide the function of communication. With additional connection kits, you can exchange data with computers and similar products. And there are also some electronic organizers on the market, which focus on note-taking and daily business management. These products tend to have a large storage capacity, but their nature is still the same as the electronic dictionary, its program is solidified in the memory chip, also does not have the ability to expand. The typical representative of this kind of products is the familiar business pass.
Pocket PCs
Often, the digital world will only refer to these PDAs as PDAs, which is the true meaning of PDAs. This is because it has almost all the features of a typical home computer. The biggest feature of PDAs is that they have their own operating system, which is generally solidified in ROM. The storage device used is mostly expensive IC flash memory with a capacity of about 16 MB. Pocket PCs generally do not have a keyboard, using handwriting and soft keyboard input, and are equipped with standard serial ports, infrared access and built-in MODEM, in order to facilitate PC connection and Internet access. The biggest difference between PDAs and the previous products is the ability to expand its applications. Based on the respective operating system, anyone can develop corresponding applications using programming languages. You can also install and uninstall as many as you like on your Pocket PC. Because of its very complete functionality, it is also more complex in operation and less suitable for beginners who do not know much about computers.
The PocketPC section is also divided into Palm and PocketPC, depending on the operating system. Palm uses the Palm OS system, developed by the Palm company; and PocketPC uses the WinCE series system, developed by Microsoft. Because of the performance of the body and system differences, these two bodies are still quite different.
Handheld computer devices
The English name of handheld computer devices is HPC, which means Hand held PC. It is a product that is in between a laptop and a PDA. Why do you say so? Because it has the common operating system of PDA, but with a small keyboard. Its appearance is similar to a traditional laptop. It is more powerful than a Pocket PC, but the same size and weight is also increased, so it is less portable than a Pocket PC.
Personal Communication Assistants
Personal Communication Assistants (PCAs) are one of the most fashionable of all these products. Its concept is to combine some of the effects of the PDA with cell phones and pagers. The most important feature of this product is that it abandons the general telephone line and adopts the wireless data reception method, which makes the product more adaptable. Although if a single theory, the early products are designed as a starting point for cell phones and products, its business functions to be significantly inferior to the general PDA, only the equivalent of the general electronic notepad function, and currently based on the WinCE system and the Palm development of products, collectively referred to as the SmartPhone, the function of the PDA with the same level or higher, but also has a communication function and wireless data exchange, more It also has communication features and wireless data exchange, and represents the future direction of PDA development.
What is a PDA cell phone
What is the digital product that domestic consumers are most concerned about? No need to answer, everyone must know, that is the cell phone! PDA cell phone is a new term in the digital field, with more and more manufacturers to join and continue to launch products, powerful PDA cell phone is becoming the focus of consumer attention and choice! So what is a PDA cell phone? The so-called PDA cell phone, is a set of PDA functions and cell phone functions as a whole, at the same time with access to the Internet function of the product.