A digital tablet, also known as a digitizing tablet or graphics tablet, allows users to draw or write directly on a computer screen. First developed in the 1970s and 1980s, these tablets remained hidden and expensive until they developed better pressure sensitivity and passive signaling which reduced pen style. Artists, graphic designers, and many other professionals now use digital tablets in their daily lives.
The History Of Graphics Tablets
The 1960s saw the development of primitive tablets for handwriting recognition, called RAND tablets or Grafacons. These used a network of wires and a magnetic signal to track pen movements. In the late 1970s and early 1980s, Computer-Aided Design, or CAD manufacturers sold tablets with their products. The first ones that were labeled as “graphics tablets” appeared in the 1980s, with Apple’s graphics tablet. They later developed pressure sensitivity and the ability to detect pen angles.
Therefore, we can say that graphics tablets were oficially invented in the 1980s.
How Graphics Tablets Work
Digitizing, or digital rendering is the use of a set of prearranged dots to represent an object, image, sound, or document in digital format. The tablet combined with a pen or stylus serves as a means of inputting data into a computer. The tablet and pen are input devices, like a keyboard or mouse. The mechanism for sending the data is in the tablet, but the pen can play a major role in what is recorded. Not only are the coordinates noted through the tablet, but the angle, pressure, and distance of the stylus, which can affect what appears on the monitor. The pen transmits signals that the tablet identifies through coordinates and then transmits when plugged into the computer.
Types of Graphics Tablets
Modern graphics tablets come in three main types. Wired tablets connect to the computer via a USB or data cable. Wireless ones send signals to the computer via Bluetooth or similar wireless technology. The interactive pen provides direct feedback, allowing users to move the pen on a monitor screen in the same way they would move a pen on paper. Older models include a cable connected to the pen, but most tablets made since the 1990s have wireless pens that do not require batteries.
Benefits of Using Graphics Tablets
Digital tablets allow more natural writing and drawing on the computer than with a mouse or keyboard input. They allow smoother lines and greater control. They also offer pressure sensitivity, an unusual feature with a mouse. Users can sign documents or draw directly in photo and graphics editing programs, without the need for a scanner. Most tablets are lightweight, rugged, and easy to carry.
Disadvantages of Graphics Tablets
Most graphics tablets create a lack of connection between the user’s hand movements and the image displayed on the screen. Many people experience problems learning to control the tablet cursor. The digital pen display corrects this problem, but it costs and weighs more than its conventional counterparts. High-end graphics tablets require a considerable monetary investment, often costing about US$200 or more, even for such a small device.