Information processing unit having display functions

A user interface method comprising the steps of:

• displaying, on a display, a request for causing a user to select whether or not setup for determining a specification of an information processing unit is to be used, during start-up processing of said information processing unit;
• displaying a setup screen on said display when the use of setup is selected, wherein said setup screen includes an item for allowing said user to select whether or not each of a liquid crystal display and a cathode ray tube display is to be used;
• and
• generating a message representing that the selection is improper when the result of the selection represents that both of said liquid crystal display and said cathode ray tube display are not used.

A user interface method comprising the steps of:

• displaying, on a display, a request for allowing a user to select whether or not setup for determining a specification of an information processing unit is to be used, during a start-up processing of said information processing unit;
• displaying a setup screen on said display when the use of setup is selected, wherein said setup screen includes an item for allowing said user to select whether or not each of a liquid crystal display and a cathode ray tube display is to be used;
• and
• controlling, by a central processing unit, a display controller for generating at least one of the display signals for said liquid crystal display and said cathode ray tube display and controlling the frequency of the display signal generated, to thereby change the frequency of the display signal to said liquid crystal display.

An information processing unit comprising:

• a central processing unit;
• a non-volatile memory for storing a start-up processing of said information processing unit;
• a main memory;
• a liquid crystal display;
• and
• a display controller for generating at least one of a display signal to said liquid crystal display and a display signal to a cathode ray tube display and controlling the frequency of said display signals generated;
• wherein said central processing unit includes means for detecting whether or not said cathode ray tube display is connected to said information processing unit, during start-up of said information processing unit, and said display signal frequency to at least said liquid crystal display is changed depending upon whether said cathode ray tube display is connected or not.

An information processing unit comprising:

• a central processing unit;
• a non-volatile memory-for storing a start-up processing to said information processing unit;
• a main memory;
• a liquid crystal display;
• a display controller for generating at least one of a display signal to said liquid crystal display and a display signal to a cathode ray tube display, and controlling the frequency of the generated display signal;
• wherein:
• display specification setting commands to said display controller in a first case where both of said liquid crystal display and said cathode ray tube display are used and in a second case where only said liquid crystal display is used are stored in advance in said non-volatile memory, respectively, and when a necessity for displaying the same screen on said cathode ray tube display, too, arises while only said liquid crystal display is used in said second case, said CPU executes said display specification setting command in said first case, stored in said non-volatile memory, for said display controller and said display controller changes the frequency of said display signal to said liquid crystal display and generates said display signal to said cathode ray tube display.

An information processing unit comprising:

• a central processing unit;
• a non-volatile memory for storing an initiation processing of said information processing unit;
• a main memory;
• a liquid crystal display;
• a display controller for generating at least one of a display signal to said liquid crystal display and a display signal to a cathode ray tube display and controlling the frequency of the generated display signals;
• and
• an external memory;
• wherein:
• said external memory stores in advance display specification setting commands to said display controller in a first case where both of said liquid crystal display and said cathode ray tube display are used, said non-volatile memory stores in advance display specification setting commands to said display controller in a second case where only said liquid crystal display is used, when a necessity for displaying the same screen on said cathode ray tube display, too, arises while only said liquid crystal display is being used in said second case, said CPU reads out said display specification setting commands in the first case, stored in said external memory, and executes the display specification setting command for said display controller, and said display controller changes the frequency of said display signal to said liquid crystal display and generates said display signal to said cathode ray tube display.

An information processing unit comprising:

• a central processing unit;
• a non-volatile memory for storing a start-up processing of said information processing unit;
• a main memory;
• a liquid crystal display;
• a display controller for generating at least one of a display signal to said liquid crystal display and a display signal to a cathode ray tube display and controlling the frequency of the generated display signal;
• and
• an external memory;
• wherein:
• a display specification setting command to said display controller in a first case where both of said liquid crystal display and said cathode ray tube display are used and a display specification setting command to said display controller in a second case where only said liquid crystal display is used are stored in advance in each of said non-volatile memory and said external memory, said CPU reads and executes said display specification setting command for either one of said first and second cases from said non-volatile memory in accordance with the kind of the display used, during the start-up processing of said information processing unit, and when a necessity for changing said display specification arises after the start-up of said information processing unit, said CPU executes said display specification setting command stored in said external memory.

An information processing unit comprising:

• a central processing unit;
• a non-volatile memory for storing a start-up processing of said information processing unit;
• a main memory;
• a liquid crystal display;
• a display controller for generating at least one of a display signal to said liquid crystal display and a display signal to a cathode ray tube display, and controlling the frequency of each of the general display signals;
• and
• an external memory;
• wherein:
• said external memory stores therein in advance a display specification setting command to said display controller in a first case where both of said liquid crystal display and said cathode ray tube display are used and a display specification setting command to said display controller in a second case where only said liquid crystal display is used, said non-volatile memory stores therein said display specification setting command in said second case, and when a necessity for changing said display specification arises while said information processing system operates in either one of said first and second cases, said CPU executes either of said display specification setting commands stored in said external memory for said display controller.