文件名称:lab5_u07_keypad_lcd_intr
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To understand how a keypad functions a raster
scan input device and to learn how to interface a
keypad to a microprocessor.
• To understand how to control an LCD panel and to
interface it to a microprocessor. (Normally, an LCD
can be used directly as a memory-mapped I/O device,
but due to current limitations of the 68HC12, a buffer
will be used between the 68HC12’s data bus and the
LCD panel.)-To understand how a keypad functions as a raster
scan input device and to learn how to interface a
keypad to a microprocessor.
• To understand how to control an LCD panel and to
interface it to a microprocessor. (Normally, an LCD
can be used directly as a memory-mapped I/O device,
but due to current limitations of the 68HC12, a buffer
will be used between the 68HC12’s data bus and the
LCD panel.)
scan input device and to learn how to interface a
keypad to a microprocessor.
• To understand how to control an LCD panel and to
interface it to a microprocessor. (Normally, an LCD
can be used directly as a memory-mapped I/O device,
but due to current limitations of the 68HC12, a buffer
will be used between the 68HC12’s data bus and the
LCD panel.)-To understand how a keypad functions as a raster
scan input device and to learn how to interface a
keypad to a microprocessor.
• To understand how to control an LCD panel and to
interface it to a microprocessor. (Normally, an LCD
can be used directly as a memory-mapped I/O device,
but due to current limitations of the 68HC12, a buffer
will be used between the 68HC12’s data bus and the
LCD panel.)
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lab5_u07_keypad_lcd_intr.pdf