Technical analysis tools are used to analyze market trends and patterns in order to make informed trading decisions. One of the most commonly used tools is charts. Charts provide a visual representation of price movements over time, allowing traders to identify trends and patterns.

There are several types of charts used in technical analysis, including:

1. Line Chart: A line chart is the simplest type of chart, showing the closing prices of a security over a specified period of time. It is created by connecting the closing prices with a straight line.

2. Bar Chart: A bar chart shows the open, high, low, and closing prices of a security over a specified period of time. Each bar represents a single trading day, with the high and low prices represented by the top and bottom of the bar, and the opening and closing prices represented by the left and right sides of the bar.

3. Candlestick Chart: A candlestick chart is similar to a bar chart, but provides more information about the price movements. Each candlestick represents a single trading day, with the body of the candlestick representing the opening and closing prices, and the wicks (or shadows) representing the high and low prices.

4. Point and Figure Chart: A point and figure chart is a unique type of chart that uses X's and O's to represent price movements. X's represent upward price movements, while O's represent downward price movements. This type of chart is used to identify long-term trends.

Charts can be used in combination with other technical analysis tools, such as moving averages and trend lines, to provide a more complete picture of market trends and patterns.