Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Semiconductor memory device having test pattern generating circuit










Image Number 7 for United States Patent #4821238.

A semiconductor memory device comprises an internal circuit including a memory circuit; a test pattern generating circuit; an element for receiving external signals supplied from the outside; and an input switching circuit connected between the test pattern generating circuit and the receiving element, for switching the input supplied to the internal circuit between output signals generating from the test pattern generating circuit and the external signals, the output signals generated from the test pattern generated circuit being input to the internal circuit through the input switching circuit in a test mode, the external signals being input to the internal circuit through the input switching circuit in a usual mode; the test pattern generating circuit, the input switching circuit, and the internal circuit being provided on the same chip.








 
 
  Recently Added Patents
Systems and methods for simultaneously configuring multiple independent backups
O-space imaging: highly efficient parallel imaging using complementary nonlinear encoding gradient fields and receive coil geometries
Hepodxilin analog enantiomers
Method and system for fail-safe call survival
Portable device for treating insect bites and the like
Method of interfacing a host operating through a logical address space with a direct file storage medium
Faucet
  Randomly Featured Patents
Tube insertion apparatus
Implement attachment apparatus and method
Inertial brake unit for air clutch
Herbicide compositions of extended soil life
Grease composition for high-temperature, high-speed and high-load bearings
Electrical device containing insulating gas under pressure and including a composite insulator provided with a window for observing contacts
N-oxide prodrug derivatives of 3-hydroxy morphinans and partial morphinans and derivatives
Network security testing
Battery module
Fountain shaving device