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Gate Expander

gate expander ("RTL digital integrated circuit gate expander")

EDIT: Back in the days of IC RTL (later replaced by DTL, then TTL, then dynamic NMOS, and so on) there were no single-chip 6-input NOR gates. If you needed an 6-input NOR, you took a normal 3-input NOR gate IC -- as used in the Apollo Guidance Computer -- plus a 3-input gate expander IC, and wired the outputs together ("wired-OR") to form an 6-input NOR gate. Here in the 21st century, most designers try (sometimes unsuccessfully) to prevent two outputs from getting connected.

gate expander ("RTL digital integrated circuit gate expander")

EDIT: Back in the days of IC RTL (later replaced by DTL, then TTL, then dynamic NMOS, and so on) there were no single-chip 6-input NOR gates. If you needed an 6-input NOR, you took a normal 3-input NOR gate IC -- as used in the Apollo Guidance Computer -- plus a 3-input gate expander IC, and wired the outputs together ("wired-OR") to form an 6-input NOR gate. Here in the 21st century, most designers try (sometimes unsuccessfully) to prevent two outputs from getting connected.

Gate Expander

("RTL digital integrated circuit gate expander")

Back in the days of IC RTL (later replaced by DTL, then TTL, then dynamic NMOS, and so on) there were no single-chip 6-input NOR gates. If you needed an 6-input NOR, you took a normal 3-input NOR gate IC -- as used in the Apollo Guidance Computer -- plus a 3-input gate expander IC, and wired the outputs together ("wired-OR") to form an 6-input NOR gate. Here in the 21st century, most designers try (sometimes unsuccessfully) to prevent two outputs from getting connected.

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source | link

gate expander ("RTL digital integrated circuit gate expander")

EDIT: Back in the days of IC RTL (later replaced by DTL, then TTL, then dynamic NMOS, and so on) there were no single-chip 6-input NOR gates. If you needed an 6-input NOR, you took a normal 3-input NOR gate IC -- as used in the Apollo Guidance Computer -- plus a 3-input gate expander IC, and wired the outputs together ("wired-OR") to form an 6-input NOR gate. Here in the 21st century, most designers try (sometimes unsuccessfully) to prevent two outputs from getting connected.

gate expander ("RTL digital integrated circuit gate expander")

gate expander ("RTL digital integrated circuit gate expander")

EDIT: Back in the days of IC RTL (later replaced by DTL, then TTL, then dynamic NMOS, and so on) there were no single-chip 6-input NOR gates. If you needed an 6-input NOR, you took a normal 3-input NOR gate IC -- as used in the Apollo Guidance Computer -- plus a 3-input gate expander IC, and wired the outputs together ("wired-OR") to form an 6-input NOR gate. Here in the 21st century, most designers try (sometimes unsuccessfully) to prevent two outputs from getting connected.

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gate expander ("RTL digital integrated circuit gate expander")

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