Display and Keyboard Assembly - Revision history

imported>Mark Grant: CM, not CSM :)

2006-11-25T22:00:33Z

CM, not CSM :)

← Older revision		Revision as of 22:00, 25 November 2006
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	The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the [[w:Apollo Guidance Computer \| Apollo Guidance Computers]] which controlled the [[Command/Service Module]] and the [[Lunar Module]].		The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the [[w:Apollo Guidance Computer \| Apollo Guidance Computers]] which controlled the [[Command/Service Module]] and the [[Lunar Module]].

	The two modules both had one or more DSKYs (two in the ~~CSM~~ and one in the LEM), but the lights used differed because the LEM needed extra lights to provide more warnings during the lunar landing process.		The two modules both had one or more DSKYs (two in the CM and one in the LEM), but the lights used differed because the LEM needed extra lights to provide more warnings during the lunar landing process.

	==Overview==		==Overview==

imported>Mark Grant: AGC link.

2006-11-25T21:57:18Z

AGC link.

← Older revision		Revision as of 21:57, 25 November 2006
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	[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights<cite>A15_DELCO</cite>]]		[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights<cite>A15_DELCO</cite>]]

	The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance Computers which controlled the [[Command/Service Module]] and the [[Lunar Module]].		The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the [[w:Apollo Guidance Computer \| Apollo Guidance Computers]] which controlled the [[Command/Service Module]] and the [[Lunar Module]].

	The two modules both had one or more DSKYs (two in the CSM and one in the LEM), but the lights used differed because the LEM needed extra lights to provide more warnings during the lunar landing process.		The two modules both had one or more DSKYs (two in the CSM and one in the LEM), but the lights used differed because the LEM needed extra lights to provide more warnings during the lunar landing process.

imported>Mark Grant: Slight clarification on the lights.

2006-11-25T21:55:54Z

Slight clarification on the lights.

← Older revision		Revision as of 21:55, 25 November 2006
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	[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights<cite>A15_DELCO</cite>]]		[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights<cite>A15_DELCO</cite>]]

	The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance ~~Computer~~ which controlled the [[Command/Service Module]] and the [[Lunar Module]].		The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance Computers which controlled the [[Command/Service Module]] and the [[Lunar Module]].

			The two modules both had one or more DSKYs (two in the CSM and one in the LEM), but the lights used differed because the LEM needed extra lights to provide more warnings during the lunar landing process.

	==Overview==		==Overview==

imported>Mark Grant: /* Programs, Verbs and Nouns */ - added DSKY image for clarity

2006-11-25T21:51:59Z

Programs, Verbs and Nouns: - added DSKY image for clarity

← Older revision		Revision as of 21:51, 25 November 2006
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	==Programs, Verbs and Nouns==		==Programs, Verbs and Nouns==

			[[Image:DSKYShowingProgram11.jpg\|thumb\|right\|Orbiter DSKY showing the AGC running Program 11, Verb 16, Noun 62]]

	Interaction with the DSKY requires an understanding of the basic design of the AGC software. In particular, the concepts of Program (also referred to as Major Mode), Verb and Noun.		Interaction with the DSKY requires an understanding of the basic design of the AGC software. In particular, the concepts of Program (also referred to as Major Mode), Verb and Noun.

imported>Tschachim: References, no LEDs, photo

2006-11-20T14:14:33Z

References, no LEDs, photo

← Older revision		Revision as of 14:14, 20 November 2006
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	[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights]]		[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights<cite>A15_DELCO</cite>]]

	The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance Computer which controlled the [[Command/Service Module]] and the [[Lunar Module]].		The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance Computer which controlled the [[Command/Service Module]] and the [[Lunar Module]].
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	The DSKY is split into three functional areas:		The DSKY is split into three functional areas:

	* The ~~LED~~ display, which is used to show information about the program which is running, data relevant to the program, and data that the astronaut is entering into the program.		* The green high-voltage [[w:electroluminescence\|electroluminescent display]] arranged in an array of [[w:seven segment display\|seven segments]] per numeral, which is used to show information about the program which is running, data relevant to the program, and data that the astronaut is entering into the program.

	* The lights panel, which indicates an unusual situation in the computer (e.g. a program error).		* The lights panel, which indicates an unusual situation in the computer (e.g. a program error).
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	Interaction with the DSKY requires an understanding of the basic design of the AGC software. In particular, the concepts of Program (also referred to as Major Mode), Verb and Noun.		Interaction with the DSKY requires an understanding of the basic design of the AGC software. In particular, the concepts of Program (also referred to as Major Mode), Verb and Noun.

	The Program determines the mode the computer is operating in. For example, Program 11 in the CM monitors the launch of the Saturn and displaying data on the DSKY in the ~~LED~~ display. Program 63 in the LM controls the braking phase of the automated lunar landing. So you need to know the program number to determine what the computer is trying to do.		The Program determines the mode the computer is operating in. For example, Program 11 in the CM monitors the launch of the Saturn and displaying data on the DSKY in the display. Program 63 in the LM controls the braking phase of the automated lunar landing. So you need to know the program number to determine what the computer is trying to do.

	The Verb specifies further optional actions that the computer can take, which may or may not be valid in all programs. For example, Verb 06 is used to display data from the computer on the ~~LED~~ display, while Verb 75 is used to start the launch monitoring program running if the computer didn't start it automatically at liftoff.		The Verb specifies further optional actions that the computer can take, which may or may not be valid in all programs. For example, Verb 06 is used to display data from the computer on the display, while Verb 75 is used to start the launch monitoring program running if the computer didn't start it automatically at liftoff.

	The Noun provides further information to the Verb. In the Verb 06 case, this specifies what data the computer should display; for example, Verb 06 and Noun 36 shows the current setting of the AGC's internal clock, whereas Verb 75 doesn't care what the Noun is set to.		The Noun provides further information to the Verb. In the Verb 06 case, this specifies what data the computer should display; for example, Verb 06 and Noun 36 shows the current setting of the AGC's internal clock, whereas Verb 75 doesn't care what the Noun is set to.
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	For further information which Programs, Verbs and Nouns are supported, see pages specific to the version of the AGC you are using.		For further information which Programs, Verbs and Nouns are supported, see pages specific to the version of the AGC you are using.

	==~~LED~~ Display==		== Display ==

	The ~~LED Display~~ is divided into five lines.		[[Image:DSKY.jpg\|thumb\|right\|The Apollo 13 DSKY<cite>APOLLOFLIGHTJOURNAL</cite>]]

			The display is divided into five lines.

	The top line has the COMP ACTY light and the Program number display. The Program number is simple: it's the program the computer is currently running. The COMP ACTY light indicates the state of the computer; when it is actively performing calculations the light will be lit, whereas when it is idle the light will be out. In most cases you'll see the light flash on and off, but in particularly compute-intensive parts of the program it may stay on for several seconds.		The top line has the COMP ACTY light and the Program number display. The Program number is simple: it's the program the computer is currently running. The COMP ACTY light indicates the state of the computer; when it is actively performing calculations the light will be lit, whereas when it is idle the light will be out. In most cases you'll see the light flash on and off, but in particularly compute-intensive parts of the program it may stay on for several seconds.
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	\|RSET\|\|'Reset' - reset the Program Alarms and clear the PROG light.		\|RSET\|\|'Reset' - reset the Program Alarms and clear the PROG light.
	\|}		\|}

			<biblio force=false>
			#[[References]]
			#APOLLOFLIGHTJOURNAL http://history.nasa.gov/afj
			</biblio>

	==External Links==		==External Links==

imported>Mark Grant at 14:54, 17 November 2006

2006-11-17T14:54:09Z

← Older revision		Revision as of 14:54, 17 November 2006
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	\|RSET\|\|'Reset' - reset the Program Alarms and clear the PROG light.		\|RSET\|\|'Reset' - reset the Program Alarms and clear the PROG light.
	\|}		\|}

			==External Links==

			* [http://www.hq.nasa.gov/alsj/a15/A15Delco.pdf Apollo 15 Delco Manual]

	[[Category:CSM systems]]		[[Category:CSM systems]]
	[[Category:LM systems]]		[[Category:LM systems]]
	[[Category:Apollo Guidance Computer]]		[[Category:Apollo Guidance Computer]]

imported>Mark Grant: /* Keyboard */

2006-11-17T14:52:56Z

Keyboard

← Older revision		Revision as of 14:52, 17 November 2006
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	\|-		\|-
	\|ENTER\|\|Enter the current values into the AGC.		\|ENTER\|\|Enter the current values into the AGC.
	\|		\|-
	\|RSET\|\|'Reset' - reset the Program Alarms and clear the PROG light.		\|RSET\|\|'Reset' - reset the Program Alarms and clear the PROG light.
	\|}		\|}

imported>Mark Grant: /* Keyboard */ - think I have correct uses for them.

2006-11-17T14:52:39Z

Keyboard: - think I have correct uses for them.

@@ Line 85: / Line 85: @@
 |-
 |NOUN||Begin entering a new Noun.
 |}

imported>Mark Grant: Intro

2006-11-17T14:22:10Z

Intro

← Older revision		Revision as of 14:22, 17 November 2006
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	[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights]]		[[Image:DelcoDSKYImage.png\|thumb\|right\|Diagram of DSKY interface, showing LM and CM lights]]

	The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance Computer which controlled the Command and ~~Service~~ Module.		The '''Display and Keyboard Assembly''' (DSKY) was the main interface between the crew and the Apollo Guidance Computer which controlled the [[Command/Service Module]] and the [[Lunar Module]].

	==Overview==		==Overview==

imported>Mark Grant: /* Lights panel */ - added expanded names for some lights.

2006-11-17T14:19:13Z

Lights panel: - added expanded names for some lights.

← Older revision		Revision as of 14:19, 17 November 2006
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	!width="100"\|Light\|\| Function		!width="100"\|Light\|\| Function
	\|-		\|-
	\|UPLINK ACTY\|\|~~Indicates that~~ the AGC is receiving uplink telemetry from the ground.		\|UPLINK ACTY\|\|'Uplink Activity' - the AGC is receiving uplink telemetry from the ground.
	\|-		\|-
	\|TEMP\|\|~~Indicates that~~ the AGC is outside normal temperature limits.		\|TEMP\|\|'Temperature' - the AGC is outside normal temperature limits.
	\|-		\|-
	\|NO ATT\|\|~~Indicates that~~ the AGC is not receiving valid attitude data from the Inertial Measurement Unit.		\|NO ATT\|\|'No Attitude' - the AGC is not receiving valid attitude data from the Inertial Measurement Unit.
	\|-		\|-
	\|GIMBAL LOCK\|\|Indicates that the IMU gimbals have locked.		\|GIMBAL LOCK\|\|Indicates that the IMU gimbals have locked.
	\|-		\|-
	\|STBY\|\|~~Indicates that~~ the AGC is in the low-power standby mode.		\|STBY\|\|'Standby' - the AGC is in the low-power standby mode.
	\|-		\|-
	\|PROG\|\|Indicates that a Program Alarm (aka internal error) has occured. The Alarm number can be viewed using the DSKY to determine the precise error.		\|PROG\|\|Indicates that a Program Alarm (aka internal error) has occured. The Alarm number can be viewed using the DSKY to determine the precise error.
	\|-		\|-
	\|KEY REL\|\|~~The computer~~ wants to display data in the R1 to R3 registers, but the user is currently entering data from the keyboard so those values cannot be updated.		\|KEY REL\|\|'Keyboard Release' - the AGC wants to display data in the R1 to R3 registers, but the user is currently entering data from the keyboard so those values cannot be updated.
	\|-		\|-
	\|RESTART\|\|The computer is restarting, probably because of a hardware problem (e.g. a voltage spike).		\|RESTART\|\|The computer is restarting, probably because of a hardware problem (e.g. a voltage spike).