Give the Excitation tables and Block diagrams for the following: 10m Jun2007
(i) D flip-flop
(ii) T flip-flop
D Flip-Flop:
The D flip-flop shown in Figure is a modification of the clocked SR flip-flop. The D input goes directly into the S input and the complement of the D input goes to the R input. The D input is sampled during the occurrence of a clock pulse. If it is 1, the flip-flop is switched to the set state (unless it was already set). If it is 0, the flip-flop switches to the clear state.
T Flip-Flop:
The T flip-flop is a single input version of the JK flip-flop. As shown in Figure, the T flip-flop is obtained from the JK type if both inputs are tied together. The output of the T flip-flop “toggles” with each clock pulse.
Write an assembly program to concatenate two strings of size 3 characters and explain its logic. 10m Jun2007
Solved program can be found on this link http://cssimplified.com/computer-organisation-and-assembly-language-programming/an-assembly-lanuage-program-which-takes-two-inputs-as-strings-and-display-the-concatenated-string
Explain the following: 5×4=20
- Flash memory
Refer: – MCS-012 Block 2 page 11
- Direct Memory Access (DMA)
Refer: – MCS-012 Block 2 page 56 and 57
- Jaz drive
Refer: – MCS-012 Block 2 page 75
- Instruction pipelining
Refer: – MCS-012 Block 3 page 48 and 49
- Hardwired control organization
Refer: – MCS-012 Block 3 page 71 and 72