The fed funds market, greatly
shrunk in
size, now mainly consists of
transactions between GSEs — chiefly Federal Home Loan Banks — and a few banks, mainly foreign.
The computer's performance has generally been improved through upgrades in digital semiconductor performance:
shrinking the
size of the semiconductor's transistors to ramp up
transaction speed, packing more of them onto the chip to increase processing power, and even substituting silicon with compounds such as gallium arsenide or indium phosphide, which allow electrons to move at a higher velocity.