you need to change are the values in line 40. The array MASK% contains the values of the dots. (In order to make this program run on the most computers, we’re using only six pins for graphics. With many computers, you can use all eight available pins.) In lines 90 and 100 we’ve defined some other variables you’ll be interested in: LX, LXFAC, LY, and LYFAC are used as scaling factors. By changing these values, you can change the size of your printed image or even distort it (you can, for example, make our circle print as an ellipse). Experiment a little bit!

The main calculations for plotting the image are done in the subroutine starting at program line 600. This is where you put the formulas that you want to plot. By changing just the lines after 600 (with some creative mathematics!) you can plot any

function-limited only by your imagination. Some examples are shown at the end of this section.

What the program section starting at line 600 actually does is to calculate starting and ending points for a line (in our circle

the “lines” are very short-sometimes the starting and ending points are the same). The coordinates of the starting point of the line are assigned to variables Xl and Y 1. The line ends at point X2, Y2. When these coordinates have been calculated, a subroutine call is made to line 270. This subroutine calculates the coordinates of individual points along that line.

After these coordinates have been determined, the subroutine at line 400 is called. This routine turns “on” an individual dot in our array called BIT%. (Keep in mind that no printing has been done yet; the computer is still drawing the image on its “graph paper” in memory.) The way an individual dot is turned on is using the logical OR function in line 470.

When all the points have been plotted in memory, printing begins at line 150. We first set the line spacing to 6/72 inch using the < ESC> “A” command. This is so that there are no gaps between rows of dots. Then the loop from line 170 to line 240 prints the dot graphics image one line (which is six dots high)

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SG-10, SG-15 specifications

Star Micronics is a renowned name in the printing industry, widely respected for producing high-quality printing solutions. Among its impressive lineup, the SG-15 and SG-10 series stand out as versatile and powerful solutions, designed to cater to various business needs, especially in the realm of point-of-sale (POS) printing.

The SG-15 and SG-10 models are thermal printers that offer rapid printing speeds, which are critical in high-demand environments such as retail and hospitality. One of the main features of these printers is their compact design, making them easy to fit into various workspace setups without sacrificing performance. Users benefit from lightweight models that do not take up excessive counter space.

Another significant characteristic of these printers is their exceptional print quality. With a resolution of 203 dpi (dots per inch), the SG-15 and SG-10 produce crisp, clear receipts and labels, enhancing customer communication and satisfaction. This high-quality output is complemented by the printers' ability to handle a variety of media, including thermal paper and labels, making them versatile tools for different printing tasks.

Connectivity options are abundant with these models, as they support multiple interfaces, including USB, Ethernet, and Bluetooth. This flexibility allows businesses to integrate the printers seamlessly into existing systems, thus optimizing workflow efficiency. The versatility in connectivity also facilitates mobile printing solutions, enabling businesses to engage customers in real-time.

Durability is another hallmark of the SG-15 and SG-10 series. Built to withstand the rigors of busy environments, these printers feature robust construction that reduces the likelihood of breakdowns or maintenance issues. The long-term reliability not only ensures consistent performance but also contributes to reduced operational costs.

Moreover, the user-friendly design of the SG-15 and SG-10 makes them accessible for staff at all levels. Easy-to-navigate controls and intuitive setup processes minimize training time and enhance operational efficiency. Additionally, these printers come equipped with energy-efficient components, promoting sustainability in business practices.

In summary, the Star Micronics SG-15 and SG-10 thermal printers embody a blend of speed, quality, connectivity, durability, and ease of use. They are tailored to meet the diverse needs of modern businesses, making them an excellent choice for any organization looking to improve its printing solutions. With features that prioritize performance and user experience, these printers are a valuable addition to any POS system.
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