GMC7175CA

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The GMC7175CA display module is a member of the LED Dot Matrix and Cluster Display Module family, capable of displaying numeric and alphanumeric characters, as well as other symbols or patterns. The display module is equipped with a 10x8 dot matrix, arranged in 5x4 clusters, enabling it to produce a wide range of displays. This module is mainly used in portable or handheld devices, such as calculators and cellular telephones.

In order to understand how the GMC7175CA display module works, one must first look at how the LED’s in the display module are actually arranged, and what can be done to manipulate them. The formulation of the matrix structure is made by having 4 separate 5x4 clusters, with each cluster located in one corner of the 10x8 dot matrix. The LED clusters are divided into four parts, vertical, horizontal, diagonal and glimmer, which influence the type and character of the display. The LED’s in the clusters are connected to the control signals by an array of semiconductor switches.

In order to display characters and symbols on the dot matrix display module, the switching elements must be manipulated to drive the selected LED’s in the correct direction. This is achieved by using a voltage division circuit, which consists of a fixed resistor and a variable resistor, connected in series with the LED matrix. The resistance of the variable resistor is changed to form an appropriate voltage division ratio, which allows the LED’s to be driven in any direction, producing a wide range of displays.

The GMC7175CA display module also includes a backlight for additional visibility, as well as a power saving option. The backlight is controlled by a PWM (Pulse Width Modulation) circuit. The circuit works by reducing the duty cycle of the PWM signal to reduce the level of power drawn from the power supply, and the backlight brightness. The backlight can be used in dark areas, or can be set to a low level in order to reduce power consumption.

In summary, the GMC7175CA display module is an excellent choice for portable devices and handheld devices. Its 10x8 dot matrix enables it to produce a wide range of displays, and its PWM circuit enables it to adjust the level of power consumption, making it an energy efficient choice. The ability to manipulate the LED’s in the cluster to create various characters, symbols and patterns make this display module highly reliable and versatile.

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